BASF SE; Gulf Cryo; Linde; Praxair Technology Inc.; SINOPEC; Chengdu Xinju Chemical Co. Ltd.; ILMO Products Company; Suzhou Jinhong Gas Co. Ltd; Toho Acetylene Co. Ltd; Xinglong Group; Xinju Chemical Co. Ltd; Airgas; Ho Tung Chemical; Markor; Lutianhua; Jiuce Group; Xinju Chemical; JinHong Gas; Xinlong Group; Dow Company; Dongxiang Gas; Sichuan Vinylon; Koatsu Gas; Air Products and Chemicals Inc