48h Long-Lasting Cold Chain Bag Suitable for Clinic, Lab, Vaccine/Specimen Transport & Drone Delivery

48h Long-Lasting Cold Chain Bag Suitable for Clinic, Lab, Vaccine/Specimen Transport & Drone Delivery. 48H Long-Lasting Insulation: Adopts VIP insulation material for stable temperature control up to 48 hours. Pharmaceutical-Grade Safety: Ideal for vaccines, drugs, reagents, specimens, and sensitive items. Lightweight & Portable Design: Equipped with handle and shoulder strap for handheld or shoulder-carry use. Wide Application Scope: Suitable for vaccines, pharmaceuticals, reagents, and biological specimens. Multi-Scene Adaptability: Ideal for high-speed rail, airplane, and last-mile delivery scenarios. OEM & ODM Services Available: Customization from samples supported with 8 R&D engineers. Flexible Temperature Control: Compatible with PCM phase change material for diverse cold chain needs.