Zhejiang Develop Gas-equipment Co., Ltd.

[ Manufacturer ]Main business are Gas equipment, air separation equipment, oxygen, nitrogen equipment.

Hangzhou Shengda Air Separation Technology Co., Ltd.

[ Manufacturer ]Main business are Mechanical and electrical products

Hangzhou Best Gas Co., Ltd.

[ Manufacturer ]Main business are Industrial gas, High purity gas (liquid), Liquid oxygen, Liquid nitrogen, Liquid argon, Carbon dioxide

Longfei Group Hangzhou Selling Company

[ Trader ]Main business are Oxygen maker