Suzhou Kangrong Co., Ltd. [China]

a silicone ring to ensure the seal the tolerance of low temperature polypropylene -196 °C.a silicone ring to ensure the seal.frozen pipe at the bottom of a special design. It can be fixed in the frozen shelf or tray for reference by the one-hand operation.Sterile, certified non-heat.complete specificationsmaterial : PP perfect sealing and watertight good quality and low price exported to all over the world

Freezing Tubes