Bewellcn Shanghai Industrial Co., Ltd is a professional supplier established in 2005, the company is mainly specialized in R&D, manufacturing, sales and technical service of chemical equipment (Cryogenic liquid storage tank such as oxygen& nitrogen&argon &ammonia& LNG, cryogenic liquid gas cylinder, cryogenic handy tank, cryogenic liquid tank container and chemical tank container, cryogenic reaction vessel, glass-lined reactor, high and low pressure atmospheric type vaporizer, non-standard ...