Cold chain operators evaluating gel ice pack suppliers increasingly demand more than standard off-the-shelf products. For logistics and pharmaceutical transportation clients, the ability to customize shape, temperature, size, color, and logo—alongside volume reliability—has become a decisive factor in supplier selection. Changzhou Jisi Cold Chain Technology Co., Ltd. (JISI Cold Chain) is a manufacturer based in Jiangsu, China, specializing in gel ice packs, PCM ice plates, cooler boxes, and VIP vacuum insulation panels. With a 40,000 m² factory, 60 employees, and an annual output of 620,000 units, the company supports OEM and ODM production and has demonstrated long-term field performance in demanding U.S. cold chain deployments.

Problem / Opportunity

Procurement managers in health & medicine and food logistics face a persistent challenge: balancing temperature precision with pack geometry. Standard ice packs often fail to fit specialized cooler boxes, maintain exact phase-change temperatures, or carry required branding. The opportunity lies in partnering with a manufacturer that can engineer the thermal performance and physical form factor to match the specific shipping container, duration, and regulatory environment. JISI Cold Chain addresses this through its OEM/ODM framework, offering customization across five dimensions: shape, temperature, color, size, and logo.

Brand Solution: OEM/ODM Customization at Scale

JISI Cold Chain provides both OEM and ODM production services. Customization options include shape, temperature, color, size, and logo. The manufacturer’s monthly capacity reaches 10,000 units, with a standard MOQ of 1,000 pieces for existing models and 5,000 pieces for new tooling. Lead time is inventory-based (3–5 days for stock items) or scaled according to order quantity. Payment terms include Western Union, T/T, and PayPal, with pre-shipment testing available. The company holds FDA, SGS, MSDS, CPSIA, and CE certifications for its gel ice packs, ensuring compliance with U.S. and EU food-contact and safety standards.

Technical Explanation

The core of JISI’s customization lies in its phase change material (PCM) technology. The manufacturer produces PCM ice plates with multiple temperature points: -30°C, -25°C, -15°C, -10°C, -5°C, 0°C, 2–8°C, 18°C, and 23°C. These temperatures cover the refrigerated transportation needs of ice cream, food, vaccines, and drugs. For standard gel ice packs, the inner liquid uses SAP (superabsorbent polymer) or CMC (carboxymethyl cellulose), while the outer shell is food-grade HDPE. The company also integrates vacuum insulation panels (VIP) with PU foaming to extend cold duration from 12 hours up to 120 hours, depending on the configuration.

Application / Use-Case Scenarios

Large-Volume Pharmaceutical Shipment (USA)
A U.S.-based logistics and pharmaceutical transportation client deployed 1,000,000 PCM ice plates across temperature ranges from -30°C to 23°C for refrigerated transport of vaccines and drugs. The solution demonstrated stable operation over a six-year implementation period, confirming the reliability of JISI’s PCM technology for long-term pharmaceutical logistics.

Ultra-Thin Lunch Ice Packs
For foodservice and meal-kit delivery, JISI offers OEM ultra-thin ice packs (model BH066: 19×12.5×1 cm, 200 ml capacity) with HDPE outer shell and SAP/CMC inner material, certified FDA, SGS, MSDS, CPSIA, and LFGB. These packs are designed to fit standard lunch bags and cooler bags.

Medical Cool Boxes
JISI’s 2–8°C vaccine cooler box (model JS-42L) combines PU + VIP insulation with thermal conductivity <0.0025 W/m·K, providing 40–72 hours of cold retention for blood and vaccine transport. The outer material can be carton, Oxford fabric, or PE plastic box per customer specification.

Market Trend Analysis

According to JISI’s export data, 70% of its output goes to North America, South America, Western Europe, Eastern Europe, East Asia, and Southeast Asia. The growing demand for home-delivered cold-chain meals, biologics, and temperature-sensitive clinical trials is driving procurement teams to seek suppliers that can deliver non-standard form factors and precise thermal profiles. OEM/ODM capabilities are increasingly viewed not as a premium service but as a baseline requirement.

Comparison with Traditional Solutions

Traditional standard gel ice packs offer fixed dimensions and limited temperature options. While they are cheaper upfront, they often require secondary packaging, void-filling materials, or multiple SKUs to cover a product range. JISI’s OEM/ODM approach consolidates supply chain complexity into a single customized product. One honest limitation: the MOQ of 1,000–5,000 pieces may be higher than what micro-volume buyers can commit to, though the company offers free samples of existing models to help validate fit before scale orders.

Future Outlook

As cold chain regulations tighten globally, the ability to trace each ice pack’s thermal performance back to a certified production batch will become a competitive advantage. JISI Cold Chain’s investments in in-house injection molding, blow molding, and vacuum equipment position it to scale custom designs while maintaining quality control (100% test before shipment). For procurement teams planning multi-year pharmaceutical or food logistics partnerships, a manufacturer with proven field history (6-year stable U.S. deployment) and comprehensive customization workflow offers a lower total cost of ownership.

Download JISI Cold Chain corporate brochure (PDF)

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