1, Hongtu Industrial Gas Co., Ltd. is an enterprise mainly engaged in the manufacture of general equipment, mainly engaged in the storage, sub-packaging and processing of industrial gases (liquid oxygen, liquid argon, liquid nitrogen, carbon dioxide, liquefied petroleum gas and dimethyl ether), located in Chunjiang East Road, Jialing District, Nanchong City.

Haiyun Industrial Gas Co., Ltd. is a comprehensive enterprise integrating operation, production and sales. It is the largest producer of liquid nitrogen industrial gas in Nanchong, located in Xinhua Road, Jialing District, Nanchong City.