Your Wholesale Phone Cooler Supply Partner

CoolBulk is an industry-and-trade integrated phone cooler supplier based in Shenzhen, China. We manufacture and stock semiconductor phone coolers, magnetic coolers, back clip cooling fans and multifunction models, and supply them to wholesalers, distributors, online sellers and brand owners worldwide.

Because we hold ready stock, small wholesale orders are practical: you can start from 50 pcs, mix models within one shipment, and reorder quickly once a product proves itself in your market. For customers who need differentiation, our in-house R&D team develops custom cooling structures, PCBs and industrial designs (ODM) from concept to mass production.

Main models are CE, FCC and RoHS certified, and every batch is inspected before shipment. We export to North America, Europe, the Middle East, Southeast Asia and South America.