Ice Bag History
In recent years, the market's hot “cool pad” has roughly two categories: one is a liquid cooler pad (including a cool cap). It uses water as a cooling material, and the natural evaporation of water...
Vaccine of COVI-19 will soon be in the market,How to inject it safely?
【Precautions for Syringe Injection】 When using a syringe to inject, you can quickly select the injection volume and repeat the adjustment (regular ± 5% error, skilled ± 1% error). When using a...