Wei Fang Wei Shi Xin Gas Equipment Co., Ltd. inakhazikitsidwa mu July 2003. Ili pa No.5111 Yingqian Street, Weifang National High-tech Development Zone, Province la Shan Dong. kampani chimakwirira kudera la mamita lalikulu 20000 ndipo ali ndi nyumba malo 11,000 lalikulu mamita. Ndi kampani yapadera yomwe imagwira ntchito pakupanga kafukufuku ndi chitukuko cha kuthamanga kwa swing adsorption ndi nembanemba kupatukana nayitrogeni, mpweya ndi mpweya wowonjezera, kuyeretsa ndi zida zina.
Majenereta a nayitrogeni ndi okosijeni a kampaniyi apeza mwayi kwa ogwiritsa ntchito padziko lonse lapansi ndi mitengo yabwino kwambiri komanso yopikisana. Kwa zaka zambiri, mankhwalawa akhala akugulitsidwa kwambiri m'mayiko monga United States, Russia, India, Pakistan, Bangladesh, Chile, Singapore, Egypt, Algeria, Tanzania, Brazil, Sudan, Djibouti, ndipo adalandira kutamandidwa kwakukulu.