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Shanghai Warmmer Co., Ltd. is a trusted OEM manufacturer of high-quality cold packs, ice packs, cooling pet mats, hand warmers, cooler bags, and cold chain solutions since 2008. Custom designs, bulk production, and global shipping.
Established in 2008, Warmmer is a full-service custom manufacturer based in Shanghai, China, specializing in hot and cold pack products. We serve medical, veterinary, sports, and consumer markets with innovative thermal solutions.
6 researchers dedicated to innovation and product development
Large-scale manufacturing with strict quality control
ISO Quality Management System (QMS) and Supply Chain Management (SCM) ensure consistent, reliable production and on-time delivery.
From medical cold packs to pet cooling mats and winter hand warmers, we offer a wide range of reusable and disposable thermal products.
Flexible gel-based cold pack for medical, sports, and food applications. Freeze and reuse endlessly.
Self-cooling mat for dogs and cats. Activates with body pressure, no electricity or water needed.
Compact warming pack for winter use. Activate by clicking metal disc, reuse by boiling.
Portable thermal bag for food, medicine, or vaccines. Keeps contents cold for 12+ hours.
Single-use cold therapy pack. Activate by squeezing to mix internal chemicals. No freezer needed.
Fabric heat pack filled with natural grains. Heat in microwave for soothing warmth.
Personal cooling garment with gel pack inserts. Ideal for workers in hot environments.
Custom thermal packaging for pharmaceuticals, biologics, and temperature-sensitive shipments.
We combine innovation, quality, and customer service to deliver reliable thermal solutions worldwide.
Compliant with ISO QMS and SCM standards for consistent quality and traceability.
Tailor size, shape, color, packaging, and branding to your exact specifications.
Reliable logistics to North America, Europe, Asia, and beyond via sea, air, or express.
Dedicated team ready to assist with inquiries, samples, and order tracking.
Find answers to common questions about our products and services.
Our instant cold packs typically contain ammonium nitrate and water in separate chambers. When activated, the inner pouch breaks and the chemicals mix, creating an endothermic reaction that rapidly cools the pack.
Yes, most of our cold and hot packs are designed for repeated use. Reusable ice packs can be frozen and thawed hundreds of times. Hand warmers can be boiled to reset the crystallization process.
Absolutely. We offer full OEM services including custom sizes, colors, logos, packaging design, and private labeling to meet your brand requirements.
MOQ varies by product type and customization level. For standard items, MOQ can be as low as 1,000 units. Contact us for specific product quotes and volume discounts.
Yes, we offer sample packs for evaluation. Some samples are free, while others may require a nominal fee depending on product type and shipping destination.
Cindy
+0086 21-57762817
+0086 17621490604
No.33, 618 Dingyuan Rd, Songjiang, Shanghai, China, 201616
For inquiries, samples, or custom product development, please visit our official website to contact the Shwarmmer team directly.
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