Custom Manufacturing for the U.S. Market
Custom Hot & Cold Pack Manufacturer for U.S. Brands
Develop custom hot and cold therapy packs with an experienced manufacturing partner supporting U.S. brands, distributors and retailers—from specification review and sampling to private-label packaging and mass production. For broader programs not specific to the U.S. market, review our OEM and private-label ice pack framework.
Manufacturing Support in China and Cambodia Get a U.S. Project Quote Chat on WhatsAppPrefer email for specifications and artwork?harry@zejinbtg.com
- U.S. Project Support
- Private-Label Programs
- Project-Specific Quality Planning
- Destination-Market Documentation Review
Email RFQs & Specsharry@zejinbtg.com
Retail & Private Label ReadyBranding, packaging and labelsWho We Support in the U.S. Market
Tailored cold therapy OEM/ODM manufacturing for diverse U.S. sales and distribution channels.
Healthcare & Medical Brands
Cold packs, recovery wraps and related formats developed against the buyer’s intended use, approved specification, labeling plan and destination-market requirements.
Medical Product Distributors
Reliable volume supply, batch consistency, and export documentation support.
Sports Recovery Brands
Anatomical therapy wraps with neoprene/nylon straps and custom gel formulations.
Pharmacy & Retail Chains
Private-label retail packaging, barcodes, shelf-ready display boxes, and UPC setup.
A Partner for U.S. Buyers
Custom Thermal Therapy Manufacturing for the U.S. Market
Dongguan Zejin Biotechnology Co., Ltd., founded in 1999, helps U.S. brands, distributors and retailers develop custom hot and cold packs—from the first specification review to samples, branded packaging and scalable production.
With production support in Dongguan and Cambodia, Cryozin gives U.S. sourcing teams a practical path for private-label programs, new product development and repeat production with clear English communication.
Learn More About Cryozin View Manufacturing Capabilities
Dual production supportDongguan and CambodiaU.S. Market Applications
Made for U.S. Healthcare, Retail & Wellness Brands
Application-focused product development for U.S. channels with specific performance, packaging, documentation and merchandising needs.
Medical & Healthcare
Custom cooling and heating products for post-procedure care, rehabilitation and professional healthcare channels.
Learn MoreSports Recovery
Reusable packs and wearable wraps designed around mobility, body fit and repeat-use performance.
Learn MorePharmacy & Retail
Retail-ready products with private-label graphics, instructions, barcodes and shelf-focused packaging.
Learn MoreBeauty & Wellness
Comfort-focused masks and wraps using soft-touch materials, shaped chambers and branded packaging.
Learn MorePromotional Products
Logo-ready shapes and packaging for campaigns, events, employee wellness and branded giveaways.
Learn MoreCold Chain Applications
PCM and cooling-pack solutions evaluated for target temperatures, pack-out configurations and logistics use.
Learn MoreProduct Range
Custom Therapy Packs for U.S. Product Lines
Start with a proven product platform, then tailor the size, shape, performance, branding and retail packaging to your U.S. sales channel.
Wrist Gel Ice Pack Wrap
Reusable hot and cold therapy wrap for wrist, hand and joint recovery applications.
- Adjustable strap
- Reusable gel pack
- Custom branding options
Knee Hot & Cold Gel Pack Wrap
Reusable knee wrap designed for targeted cold or heat therapy and flexible everyday use.
- Knee-contoured design
- Adjustable fastening
- Retail-ready packaging
Multi-Purpose Hot & Cold Gel Pack
Flexible reusable gel pack with an elastic strap for knee, wrist, elbow and ankle applications.
- Elastic band design
- Reusable hot and cold therapy
- Custom packaging
Shoulder Hot & Cold Ice Wrap
Wearable shoulder wrap with adjustable straps for recovery, rehabilitation and post-exercise care.
- Shoulder-contoured fit
- Adjustable neoprene straps
- Reusable gel insert
Gel Bead Hot & Cold Wrap
Reusable gel bead wrap with adjustable support for a variety of joints and recovery needs.
- Gel bead construction
- Adjustable elastic strap
- Multi-joint use
Vasectomy Recovery Cold Pack Set
Reusable cold-pack set designed for targeted post-procedure comfort and recovery.
- Targeted recovery design
- Reusable gel packs
- Private-label packaging
Face Ice Pack for Jaw Relief
Reusable hot and cold therapy wrap designed for jaw, face and oral-care recovery programs.
- Face-contoured coverage
- Adjustable closure
- Custom branding options
Tooth-Shaped Hot & Cold Gel Pack
A distinctive reusable gel pack format for dental, oral-care and promotional product programs.
- Tooth-shaped design
- Material options to confirm
- Custom retail packaging
Project Workflow
From Product Idea to Mass Production
A practical development process that aligns technical requirements, samples, approvals and production controls.
- 01
Requirement Review
Application, target market, quantity, packaging and performance goals.
- 02
Material and Formula Selection
Outer material, gel or PCM system and temperature performance.
- 03
Product Design
Dimensions, chambers, sealing structure, straps, graphics and pack-out.
- 04
Prototype and Sampling
Prototype production, printing checks and practical sample evaluation.
- 05
Testing and Approval
Performance, leakage, weight, seal and packaging review before sign-off.
- 06
Mass Production and Delivery
Controlled production, final inspection, packing and shipment coordination.
OEM & ODM
Flexible OEM and ODM Customization
Build a product around your application, user experience, channel and price target. Cryozin can help evaluate manufacturability and coordinate product details across the full specification.
Discuss Your Custom ProjectQuality Management
Quality Control at Every Production Stage
Project-specific controls are built around materials, formula, filling, sealing, temperature performance and final packaging requirements.
Incoming Material Inspection Gel Formula Verification Filling Weight Control Seal Strength Testing Leakage Inspection Low-Temperature Testing Heating Cycle Testing Final Packaging Inspection View Our Quality Control
ISO 13485Quality management supportCompany Background
Our Story
Our industry experience began in 1999 with a focus on practical thermal products and repeatable manufacturing. Over time, the business expanded from standard supply toward application-driven development for international B2B customers.
Today, Cryozin works with buyers that need coordinated product, packaging and quality support rather than a one-size-fits-all catalog item.
Growth and Capability
Our Manufacturing Development
Manufacturing capacity in Dongguan and Cambodia supports international programs with different volume, lead-time and supply-chain needs.
Our development has progressed from standard gel-pack production to customized materials, formulas, structures, wearable systems, private-label packaging and project-specific quality documentation.
Documentation for U.S. Projects
Quality Management & U.S. Documentation Support
Available documentation, testing records and certification scope are reviewed according to the product, intended U.S. market and project requirements.
Built for U.S. B2B Buyers
For Brands, Distributors & Retail Teams
We protect customer confidentiality and therefore present the U.S. buyer types we support rather than unauthorized brand logos.
Healthcare Brands
Medical Distributors
Retail Chains
Sports Recovery Brands
Promotional Product Companies
Importers and Wholesalers
Inside Cryozin
Factory and Exhibition Showcase
A selection of current production, quality-control and supporting operational photography.
U.S. Buyer Value
Why U.S. Buyers Work With Cryozin
Practical manufacturing support for U.S. procurement, product-development and private-label teams.
Experienced Manufacturer
Industry experience since 1999 with a focus on thermal therapy product production.
Private-Label Development
Support from specification review through samples, approvals, branding, packaging and production.
Flexible MOQ for New Programs
Order quantities are evaluated according to the product structure, materials, printing and packaging you need.
Quality Control & Testing
Inspection and testing controls can be matched to your approved product specification and project criteria.
U.S. Documentation Support
Documentation support is evaluated for your specific product category, market needs and buyer requirements.
Clear English Communication
Keep projects moving with clear specification reviews, sample feedback and production updates.
Example Review Path for a U.S. Hot & Cold Pack Brief
Illustrative workflow only. Final materials, tests, performance targets and regulatory responsibilities depend on the approved project specification.
Questions to Resolve
A buyer brief should define intended use, user group, preparation method, skin interface, reusable-life target, packaging, claims, destination market and required evidence before the product path is selected.
Sample-to-Production Path
- Construction review: Compare shell, liner, seam, closure and wearable components against the intended use.
- Thermal performance: Agree the cooling and heating targets, conditioning method and test protocol.
- Sample approval: Record dimensions, fill, workmanship, artwork, instructions and packaging on the approved sample.
- Production authorization: Confirm inspection points, acceptance criteria, records and shipment requirements before mass production.
Frequently Asked Questions by U.S. Buyers
Project-specific answers for supplier location, order quantity, sampling, confidentiality and quality planning.
1. Are you a manufacturer located in the United States?
No. Cryozin is an overseas OEM/ODM manufacturer with production facilities located in Dongguan, China and Cambodia. We serve U.S. brands, healthcare companies, and distributors with custom manufacturing, private-label packaging, and export execution.
2. What is your typical Minimum Order Quantity (MOQ)?
MOQ depends on the product structure, materials, printing, packaging and whether a new mold is required. Share the intended product and quantity so the current minimum and quotation can be confirmed for that project.
3. How long does sample development and mass production take?
Sample and production timing is confirmed after the product specification, artwork, packaging, test requirements and order quantity are reviewed. Ask for the current project schedule before placing an order.
4. Can you sign a Non-Disclosure Agreement (NDA)?
NDA requests can be reviewed for projects involving proprietary drawings, formulas or packaging. Confirm the agreement process before sharing confidential project information.
5. How do you ensure product quality and leak prevention?
Quality controls are defined against the approved specification and may include incoming-material review, fill-weight checks, seal and leakage checks, thermal-performance checks and final inspection. Confirm the sampling plan, acceptance criteria, test methods and records required for your project.
Start Your U.S. Project
Request a Quote for Your U.S. Product Launch
Tell us your target U.S. sales channel, product application, quantity, packaging and timing. The more detail you share, the more accurately we can assess the right product path.
- Product feasibility review
- Private-label packaging guidance
- Sample and production planning
U.S. Project Support
Ready to Launch a Custom Hot & Cold Pack for the U.S. Market?
Share your product category, U.S. sales channel and packaging requirements. Our team will assess the project and prepare a custom manufacturing path.
Request a U.S. Project Quote Email harry@zejinbtg.com Chat on WhatsApp
Ready to Develop Your Custom Hot & Cold Pack?
Share your product specifications, target application, estimated order quantity, and packaging requirements. Cryozin will review your project inputs and prepare a project-specific manufacturing proposal after the required details are confirmed.
Request a Custom Quote Discuss Your Project on WhatsApp