Tumblers In Bulk

tumblers in bulk Safety Certifications

When purchasing tumblers in bulk, it's crucial to ensure they meet specific safety certifications to guarantee they are safe for consumer use. These certifications typically cover materials, manufacturing processes, and potential contaminants. Here are some key safety certifications to look for:

1. FDA Certification: In the United States, the Food and Drug Administration (FDA) regulates materials that come into contact with food. Tumblers that claim to be FDA-approved assure they are made from food-safe materials free from harmful chemicals like BPA (Bisphenol A).

2. LFGB Certification: In Europe, the Lebensmittelsicherheits- und Futtermittelgesetzbuch (LFGB) sets strict standards for materials that come into contact with food. LFGB certification ensures that the tumblers are safe and suitable for use with food and beverages.

3. Prop 65 Compliance: California's Proposition 65 requires businesses to provide warnings about significant exposures to chemicals that cause cancer, birth defects, or other reproductive harm. Tumblers meeting Prop 65 standards are free from hazardous substances listed under this regulation.

4. CPSIA Compliance: The Consumer Product Safety Improvement Act (CPSIA) lays down regulations concerning children’s products in the U.S. If tumblers are intended for children, they should comply with CPSIA, which includes limits on lead and phthalates and mandatory lab testing.

5. RoHS Certification: The Restriction of Hazardous Substances (RoHS) directive restricts the use of specific hazardous materials found in electrical and electronic products. Although not a direct food-safety certification, RoHS compliance can be relevant for tumblers that include electronic components like temperature display features.

6. ISO Standards: International Organization for Standardization (ISO) certifications like ISO 9001 for quality management and ISO 22000 for food safety management can also be pertinent. These standards ensure the manufacturing process follows rigorous quality and safety protocols.

Ensuring these certifications are in place can protect consumers and ensure the tumblers are high-quality and safe for use. Always ask suppliers for documentation proof to verify compliance.

List Reference Technical Parameters of "tumblers in bulk"

When procuring "tumblers in bulk," the following technical parameters are essential to ensure they meet your quality and functional requirements:

1. Material:
- Types: Stainless steel, plastic, glass, ceramic, silicone.
- Grade: For stainless steel (e.g., 304, 316), plastic (BPA-free), glass (tempered or borosilicate).

2. Capacity:
- Standard volumes: 8 oz, 12 oz, 16 oz, 20 oz, 24 oz.

3. Dimensions:
- Height, diameter, and weight.
- Typically measured in inches or millimeters.

4. Insulation:
- Single-wall, double-wall, or vacuum insulation for temperature retention.
- Efficiency: Measured in hours (e.g., keeps cold for 12 hours, hot for 6 hours).

5. Lid Types:
- Flip top, screw-on, push-on, straw-friendly.
- Leakproof and spill-resistant options.

6. Base Features:
- Non-slip bases (e.g., rubberized).
- Wide base for stability.

7. Durability and Safety:
- Impact resistance.
- Chemical resistance (for plastic tumblers).
- Dishwasher safe (top-rack recommended).

8. Certification and Compliance:
- FDA, LFGB certified for food-grade safety.
- RoHS compliant for environmental safety.

9. Customization:
- Color options.
- Branding: Screen printing, laser engraving, embossing.
- Packaging: Individual wrapping, bulk packaging.

10. Special Features:
- Handles or grips for extra convenience.
- Stackability for easy storage.
- Compatibility with standard cup holders.

11. Ordering Information:
- Minimum order quantity (MOQ).
- Lead time for production and delivery.
- Sample availability and costs.

12. Environmental Considerations:
- Recyclable materials.
- Options for biodegradable or compostable materials.

These parameters will help you specify your bulk tumbler needs accurately and ensure you receive products that are high-quality and fit for purpose.

List Product features of "tumblers in bulk"

Certainly! Here are some key features of "tumblers in bulk":

1. Cost-Effective Pricing:
- Bulk purchases often come with significant discounts, making it cost-efficient for businesses, events, or personal large-scale use.

2. Variety of Sizes:
- Available in various sizes ranging from small to large capacities to meet diverse needs.

3. Material Options:
- Offerings include stainless steel, plastic, glass, and eco-friendly materials, catering to different preferences and usage scenarios.

4. Durability:
- High-quality construction ensures long-lasting usage, reducing the need for frequent replacements.

5. Customizable:
- Many suppliers offer customization options like logos, colors, and designs, perfect for branding or personalizing gifts.

6. Insulation Properties:
- Some tumblers include double-wall insulation to keep beverages hot or cold for extended periods.

7. Lid Options:
- Varieties come with different lid types, including spill-proof, flip-tops, straws, and slide covers.

8. Non-Toxic and BPA-Free:
- Ensures safety and health, commonly used in food-grade materials.

9. Dishwasher-Safe:
- Many tumblers are easy to clean, being dishwasher-safe.

10. Grip and Ergonomics:
- Designed with comfort in mind, featuring grooves, rubber grips, or ergonomic shapes for easy handling.

11. Eco-Friendly:
- Reusable nature helps reduce single-use plastic waste, aligning with environmental sustainability goals.

12. Versatile Usage:
- Suitable for a wide range of uses including beverages like coffee, tea, water, and smoothies, ideal for both indoor and outdoor activities.

13. Aesthetic Variety:
- Available in multiple colors, patterns, and finishes to match personal style or event themes.

14. Lightweight and Portable:
- Designed for ease of transport, making them perfect for travel, gym, office, or home use.

These features help cater to various consumer needs and preferences, making them a practical choice for bulk purchases.

List Various Types of "tumblers in bulk"

Certainly! Tumblers are versatile drinking vessels popular for both personal and commercial use. Here are various types available in bulk:

1. Stainless Steel Tumblers:
- Insulated: Keeps beverages hot or cold for extended periods.
- Non-insulated: Standard option for everyday use.

2. Plastic Tumblers:
- Single-Walled: Cost-effective, lightweight.
- Double-Walled: Provides insulation to keep drinks at the desired temperature.

3. Glass Tumblers:
- Basic Glass: Clear, elegant, suitable for various drinks.
- Colored/Tinted: Adds a decorative touch.
- Tempered Glass: Extra durable, suitable for heavy usage.

4. Acrylic Tumblers:
- Shatter-resistant, lightweight, available in various designs and colors.

5. Copper Tumblers:
- Eco-friendly and known for their antimicrobial properties.

6. Ceramic Tumblers:
- Often used for hot beverages, available in various designs and finishes.

7. Eco-friendly Tumblers:
- Made from bamboo, wheat straw, or recycled materials.

8. Travel Tumblers:
- With Lids: Often come with spill-proof lids for on-the-go use.
- With Straws: Convenient for sipping cold drinks.

9. Sports Tumblers:
- Designed for active lifestyles, often with easy-grip features and spill-resistant lids.

10. Customizable Tumblers:
- Can be personalized with logos, names, or designs, ideal for promotions and gifts.

Purchasing tumblers in bulk can provide significant cost savings, especially for businesses, events, or promotional needs. Consider factors like the material, intended use, and target audience when selecting the type of tumblers in bulk.

List Application of "tumblers in bulk"

"Tumblers in bulk" can refer to purchasing large quantities of reusable drinking containers, which offer a myriad of applications across various contexts. Here are some potential uses:

1. Corporate Gifting and Promotions:
- Branded Merchandise: Businesses can customize bulk tumblers with logos and distribute them as promotional items at events, trade shows, and conferences.
- Employee Gifts: Tumblers make excellent corporate gifts, promoting hydration and sustainability within the organization.

2. Events and Special Occasions:
- Weddings and Parties: Personalized tumblers can serve as memorable gifts or functional drinkware at weddings, birthday parties, and anniversaries.
- Fundraisers and Charity Events: Selling or gifting tumblers can help raise funds and awareness for causes.

3. Educational Institutions:
- School Merchandise: Schools and universities can sell branded tumblers in their bookstores or use them as giveaways during orientation and alumni events.
- Student Incentives: Rewarding students for achievements or participation with reusable tumblers encourages eco-friendly practices.

4. Health and Fitness:
- Gym Merchandise: Fitness centers can offer branded tumblers to members, promoting hydration and gym loyalty.
- Wellness Programs: Organizations can distribute tumblers to encourage employees to stay hydrated, thereby supporting overall wellness initiatives.

5. Retail and Online Sales:
- E-commerce: Selling stylish or customizable tumblers in bulk online caters to consumers' increasing focus on sustainable and personalized products.
- In-Store Promotions: Retailers can use bulk tumblers for special promotions or seasonal sales.

6. Hospitality and Tourism:
- Hotels and Resorts: Offering branded tumblers to guests can enhance their experience and serve as functional souvenirs.
- Tour Operators: Providing reusable tumblers during tours can minimize single-use plastic waste.

7. Community and Environmental Initiatives:
- Awareness Campaigns: Distributing tumblers during environmental campaigns supports the reduction of single-use plastics.
- Local Programs: Community centers can offer tumblers as part of workshops or local events to promote sustainability.

In conclusion, purchasing tumblers in bulk is beneficial for branding, promoting sustainability, engaging communities, and enhancing experiences across various sectors.

List Buyer Types of "tumblers in bulk"

When it comes to purchasing tumblers in bulk, several distinct buyer types often emerge based on their specific needs and usage scenarios. Here are the key buyer types:

1. Corporate Clients:
- Usage: Corporate clients purchase tumblers in bulk for branding purposes, employee gifts, corporate events, and promotional giveaways.
- Customization: They often seek customization options like logo imprinting and company colors.
- Quantity: Medium to large volumes depending on the size of the company and event.

2. Educational Institutions:
- Usage: Schools, universities, and colleges buy tumblers for student events, faculty gifts, fundraising activities, and as merchandise in campus stores.
- Customization: Often require school logos and mascots.
- Quantity: Varies from small to medium batches, depending on the event size and institution’s budget.

3. Event Planners:
- Usage: For large events such as weddings, conferences, festivals, and private parties.
- Customization: Often customizable with event themes, dates, and personal messages.
- Quantity: Typically medium to large quantities contingent on the event scale.

4. Non-Profit Organizations:
- Usage: For fundraising events, donor gifts, volunteer appreciation, and awareness campaigns.
- Customization: Logos and campaign messages are commonly required.
- Quantity: Small to medium quantities based on the event or campaign requirements.

5. Retailers:
- Usage: Store resale and online sales.
- Customization: May not always require custom branding but focus on trendy and popular designs.
- Quantity: Often large batches to meet consistent consumer demand.

6. Hospitality Industry:
- Usage: Used by hotels, resorts, and cruise lines for guest use, welcome gifts, or promotional items.
- Customization: Logos and branding tailored to the hospitality property.
- Quantity: Medium to large quantities depending on the property's size and guest turnover rate.

7. Fitness and Health Brands:
- Usage: For member perks, promotional giveaways, and branded merchandise.
- Customization: Often require branding with gym logos and motivational messages.
- Quantity: Medium quantities correlating with membership numbers.

Each of these buyer types has specific needs and preferences, shaping the nature and scale of their bulk tumbler purchases.

List "tumblers in bulk" Project Types for Different Industries

Sure! Below is a list of project types for ordering tumblers in bulk for different industries:

1. Hospitality Industry:
- Hotel Chains: Custom-branded tumblers for guest rooms or gift shops.
- Restaurants and Cafes: Reusable tumblers for takeaway drinks, promoting sustainability.
- Event Catering: Personalized tumbler sets for special events like banquets and weddings.

2. Corporate Sector:
- Employee Wellness Programs: Branded tumblers as part of hydration initiatives.
- Corporate Gifting: Customized tumblers for clients, employees, and partners.
- Promotional Events: Giveaways at trade shows, conferences, and workshops.

3. Education:
- School Spirit Merchandise: Tumblers featuring school logos for students and faculty.
- Fundraising Events: Selling branded tumblers to raise funds for school activities.
- Eco-Friendly Campaigns: Promoting reusable tumblers to reduce single-use plastics.

4. Retail Industry:
- E-commerce Stores: Offering customizable tumblers to consumers.
- Gift Shops: Stocking bulk tumblers with various designs for sale.
- Pop-Up Shops: Branded tumblers tailored to specific events or seasons.

5. Healthcare:
- Hospitals and Clinics: Branded tumblers for patient care packages.
- Health Campaigns: Promoting health initiatives with tumbler giveaways.
- Fitness Centers: Custom tumblers for gym members.

6. Non-profit Organizations:
- Awareness Campaigns: Custom tumblers for spreading awareness about causes.
- Donor Gifts: Appreciating donors with branded tumblers.
- Event Merchandising: Selling tumblers at fundraising events.

7. Outdoor and Recreation:
- Parks and Resorts: Souvenir tumblers with scenic designs.
- Adventure Tours: Durable tumblers for participants.
- Sports Teams: Team-branded tumblers for fans and players.

8. Technology Sector:
- Tech Conferences: Tech-themed tumblers for attendees.
- Gadget Stores: Selling high-quality, branded tumblers.
- Startup Promotions: Promotional tumbler giveaways to boost brand awareness.

These project types leverage the utility and branding potential of tumblers across various industries, enhancing both marketing and operational efforts.

tumblers in bulk Accessories Upgrades and Custom Manufacturing Options

When considering tumblers in bulk, there are numerous accessories, upgrades, and custom manufacturing options available to enhance both functionality and aesthetic appeal.

Accessories: Popular accessories for bulk tumblers include lids with various features like spill-proof, straw-compatible, and sliding closures. You can also consider reusable straws, cleaning brushes, and silicone sleeves for added grip and insulation. Some suppliers offer customization of these accessories to complement your brand or specific needs.

Upgrades: Upgrading bulk tumblers to double-walled or vacuum-insulated versions can significantly enhance their thermal performance. This helps keep beverages hot or cold for extended periods. Additionally, opting for BPA-free or eco-friendly materials like stainless steel or recycled plastics can appeal to environmentally conscious consumers. Adding rubberized bottoms can prevent slipping and scratching on surfaces.

Custom Manufacturing Options: Customization is key when ordering bulk tumblers. Many manufacturers offer a variety of color choices, finishes (like matte or glossy), and printing options for logos, designs, and text. Laser engraving is another durable and high-quality option for adding branding or personalization. Furthermore, you can select from a range of sizes and shapes to better fit your market or use-case scenario.

In summary, when purchasing tumblers in bulk, consider accessorizing with custom lids, straws, and grips. Upgrading to higher-quality materials and insulation can enhance performance. Finally, take advantage of custom manufacturing to create a product that perfectly aligns with your brand image and customer needs.

List Quality Control and The Manufacturing Process of "tumblers in bulk"

Quality Control and Manufacturing Process of Tumblers in Bulk

Manufacturing Process:

1. Material Selection: High-quality raw materials such as stainless steel, plastic, or glass are chosen based on the desired properties of the tumblers.

2. Design and Mold Preparation: CAD software is used to design the tumblers. Molds are then crafted from steel to form the tumblers.

3. Forming: Depending on the material:
- Plastic Tumblers: Injection molding is most common.
- Glass Tumblers: Blow molding processes are used.
- Metal Tumblers: Sheet metal is cut, formed, and welded.

4. Finishing: Processes such as polishing for metal, annealing for glass, or trimming excess materials for plastic tumblers improve appearance and functionality.

5. Decoration/Branding: Logos or designs are applied using screen printing, decals, or laser engraving.

6. Assembly: Components like lids, straws, or handles are assembled and attached.

7. Packaging: Tumblers are packaged in bulk cartons, ensuring they are protected during transit.

Quality Control:

1. Material Inspection: Initial raw materials are inspected for quality and conformity to specifications.

2. In-Process Inspections: Frequent checks during manufacturing, such as mold inspection and temperature control in plastic forming, ensure consistency.

3. Dimensional Accuracy: Tumblers are measured using calipers and other tools to ensure they meet design specifications.

4. Surface and Finishing: Surface inspection for defects like cracks, scratches, and uniformity. Polishing and coating are examined for consistency.

5. Functional Testing: Leakage tests for metal and glass tumblers, durability tests for plastic, and thermal properties checks if applicable.

6. Visual Inspection: Final visual inspection for aesthetic appeal, proper branding, and any defects.

7. Final Sampling: Random sampling from the bulk batch for comprehensive testing ensures overall quality consistency.

8. Compliance Check: Ensuring all products meet regulatory and safety standards (e.g., BPA-free for plastics).

By prioritizing meticulous quality control at each stage, manufacturers ensure that tumblers produced in bulk meet high standards of quality and functionality.

How to use "tumblers in bulk"

Using tumblers in bulk can be highly efficient for various occasions and purposes. Here are some ideas on how to make the best use of them:

Event Hosting

1. Weddings and Parties: Provide personalized or themed tumblers as keepsakes for guests. This can be more eco-friendly than disposable cups.
2. Corporate Events: Have branded tumblers to promote your business while offering attendees a reusable drink container.

Promotions and Giveaways

1. Customer Gifts: Offer tumblers as part of a promotional package when customers make a purchase over a certain amount.
2. Employee Incentives: Distribute tumblers as part of a welcome kit or as rewards for meeting goals.

Practical Uses

1. Schools and Colleges: Provide tumblers for events, or offer them in cafeterias to reduce single-use waste.
2. Gyms and Wellness Centers: Sell or give away branded tumblers for members to use during workouts.

Environmental Initiatives

1. Community Programs: Partner with local organizations to distribute tumblers during clean-up events or community drives.
2. Office Use: Replace disposable cups in offices with washable tumblers to minimize waste and reduce costs.

Customization

1. Branding: Add logos, names, or messages to make the tumblers stand out and serve a marketing purpose.
2. Art and Crafts: Use blank tumblers for DIY projects. They can be painted, bedazzled, or personalized in workshops.

Reselling

1. Store Inventory: Resell bulk-bought tumblers in retail stores or online marketplaces.
2. Custom Orders: Offer customization options for customers wanting personalized tumblers.

By using tumblers in bulk strategically, you can not only cut down on waste but also engage customers, guests, and employees in an eco-friendly manner, promote your brand, and even create additional revenue streams.

"tumblers in bulk" Comparative Analysis

When procuring tumblers in bulk, it's essential to weigh several factors to ensure cost-effectiveness, quality, and suitability for your needs. Let's compare key aspects:

1. Material:
- Plastic: Cost-effective, lightweight, and often customizable. Ideal for large events or promotional giveaways but might lack the aesthetic appeal and durability of other materials.
- Glass: Offers a premium look and feel. Suitable for upscale events or branding but is heavier and fragile, raising shipping costs and breakage risks.
- Stainless Steel: Combines durability and a sleek look. High initial cost but excellent for long-term use, especially if insulation is a factor.

2. Cost:
- Economy of Scale: Buying in bulk usually reduces unit cost. For example, plastic tumblers might drop significantly in price per piece when ordered in large quantities.
- Customization: Printing logos or adding designs adds to the cost. Plastic and some stainless steel tumblers often offer cheaper customization options.

3. Environmental Impact:
- Reusable Options: Glass and stainless steel tumblers are more eco-friendly due to their reusability and longevity. Plastic tumblers can be environmentally problematic unless made from recycled materials and designed for multiple uses.

4. Usage Context:
- Events and Promotions: Plastic tumblers are popular for one-time use events due to cost and ease of transport. Stainless steel and glass are better for corporate gifts and longer-term use scenarios, adding perceived value to the recipient.

5. Supplier Reliability:
- Vet potential suppliers thoroughly, looking at reviews, product samples, and delivery reliability. Consistency in quality and timeliness of delivery are crucial, especially for large orders.

In conclusion, the best choice depends on balancing cost, longevity, environmental impact, and the specific use case. For upscale, durable and environmentally friendly solutions, glass or stainless steel are preferred. For budget-friendly, large-scale distribution, plastic might be more practical.

"tumblers in bulk" Warranty and Support

When purchasing tumblers in bulk, it’s essential to consider the warranty and support services provided by the supplier. Typically, reputable suppliers will offer a warranty that ensures the tumblers are free from defects in materials and workmanship for a specified period. It's important to review the terms of the warranty to understand what is covered and the duration of the coverage. Some suppliers may offer extended warranties for an additional fee.

In case of defects or issues, the warranty often covers replacements or repairs. Ensure you know the process for making a warranty claim, which may require providing proof of purchase or photos of the defective items.

Support services are also crucial, particularly when purchasing in bulk. Good suppliers provide comprehensive customer service, including pre-purchase inquiries, assistance with order placement, and post-purchase support. Look for suppliers that offer multiple channels of communication, such as phone support, email, and live chat. Prompt and effective support can be a significant factor in resolving issues quickly, ensuring a smooth buying experience.

Additionally, inquire about the return and refund policies. Understanding these policies will give you peace of mind that you can return or exchange items if they do not meet your expectations. Some suppliers may also offer a satisfaction guarantee, further ensuring that your purchase meets quality standards.

In summary, when buying tumblers in bulk, carefully consider the warranty and support services offered by the supplier. A solid warranty provides protection against defects, and reliable customer support ensures you get the help you need throughout the purchasing process. This will contribute to a positive overall experience and satisfaction with your bulk purchase.

List "tumblers in bulk" FAQ

Tumblers in Bulk FAQ

#### 1. What are the benefits of buying tumblers in bulk?
Buying tumblers in bulk often results in significant cost savings per unit. It is also a convenient option for businesses, events, or large groups needing many tumblers simultaneously.

#### 2. What materials are bulk tumblers made from?
Bulk tumblers are available in various materials, including plastic, stainless steel, glass, and eco-friendly options like bamboo and recycled plastic.

#### 3. Can we get customized tumblers when purchasing in bulk?
Yes, many suppliers offer customization options such as logos, text, and unique designs. Customization usually requires a minimum order quantity.

#### 4. What is the typical minimum order quantity for bulk tumblers?
The minimum order quantity (MOQ) varies by supplier but is generally between 50 to 500 units.

#### 5. Are there discounts available for larger orders?
Most suppliers offer tiered pricing, where the cost per unit decreases as the order size increases.

#### 6. How long does it take to receive an order of bulk tumblers?
Delivery times vary depending on the supplier, the level of customization, and the shipping method chosen. Standard orders usually take 1-3 weeks for delivery, while customized orders may take longer.

#### 7. What are the common uses for tumblers bought in bulk?
Bulk tumblers are commonly used for corporate events, promotional giveaways, weddings, and large-scale parties or functions.

#### 8. Can I see a sample before placing a bulk order?
Many suppliers offer sample tumblers for a small fee. This allows you to review the quality and design before committing to a large purchase.

#### 9. What payment methods are accepted for bulk orders?
Payment methods typically include credit/debit cards, bank transfers, and sometimes, PayPal. Some suppliers may offer payment plans for large orders.

#### 10. Do bulk tumblers come with a warranty?
Warranties depend on the supplier and the type of tumbler. Some may offer limited warranties that cover manufacturing defects.

By understanding these common questions, you can make an informed decision when purchasing tumblers in bulk.

Top 10 FAQ with answer about tumblers in bulk for Buyer Sourcing from China

Sure, here are the top 10 frequently asked questions (FAQ) with answers about sourcing tumblers in bulk from China:

1. Q: What is the Minimum Order Quantity (MOQ) for bulk purchases?
- A: MOQ typically ranges from 500 to 1,000 units, depending on the supplier. Negotiations may be possible for larger orders.

2. Q: What materials are used for tumblers, and which is best?
- A: Tumblers are commonly made from stainless steel, plastic, and glass. Stainless steel is durable and retains temperature well, making it a popular choice.

3. Q: How can I ensure the quality of tumblers from Chinese suppliers?
- A: Request samples before placing a bulk order and consider third-party quality inspection services for thorough checks.

4. Q: What is the lead time for bulk orders?
- A: Lead time varies but generally ranges from 30 to 60 days. This includes manufacturing and shipping time.

5. Q: Are custom designs and branding possible?
- A: Yes, many suppliers offer customization options including colors, logos, and packaging. Provide your artwork and specifications to get a quote.

6. Q: What are the payment terms when ordering from China?
- A: Common payment terms include 30% advance deposit and 70% balance before shipment. Payment methods include T/T (Telegraphic Transfer), L/C (Letter of Credit), and occasionally PayPal for smaller amounts.

7. Q: What shipping methods are available, and what are the costs?
- A: Shipping can be done via sea (cheaper, longer) or air (expensive, faster). Costs depend on the volume, weight, and destination of the shipment.

8. Q: How can I find reliable suppliers for tumblers in China?
- A: Use platforms like Alibaba or Global Sources, attend trade shows, and seek referrals. Always check reviews and ratings of the suppliers.

9. Q: Are there safety and certification requirements for importing tumblers?
- A: Ensure compliance with relevant safety standards such as FDA, LFGB, or CE. Verify certifications during the supplier selection process.

10. Q: What if the delivered product does not match the sample?
- A: Include stringent terms in your purchase agreement for quality assurance and potential refunds or replacements. Utilizing an escrow service can add a layer of protection.

These answers provide a concise overview to help you make informed decisions when sourcing tumblers in bulk from China.