ASAHIMAS CHEMICAL, PT. (INDONESIA)
CENTRAL FILTER MFG. CO., LTD. (JAPAN)
FUJI FILTER MFG. CO., LTD. (JAPAN)
HYUNDAI ENGINEERING CO., LTD. (KOREA)
IHI CORPORATION (JAPAN)
IKPT, PT. (INDONESIA)
IMSTALCON (KAZAKHSTAN)
JGC CORPORATION (JAPAN)
JGC INDONESIA, PT. (INDONESIA)
JNK HEATERS CO. LTD (KOREA)
KANEMATSU CORPORATION (JAPAN)
LAUTAN OTSUKA CHEMICAL, PT. (INDONESIA)
MORITANI CO., LTD. (JAPAN)
MITSUBISHI HITACHI POWERS SYSTEM ENGINEERING, LTD. (JAPAN)
MITSUBISHI CHEMICAL INDONESIA, PT. (INDONESIA)
MITSUI CHEMICAL ENGINEERING CO., LTD. (JAPAN)
MITSUI ENGINEERING & SHIPBUILD CO., LTD. (JAPAN)
NATCO JAPAN CO., LTD. (JAPAN)
NIHON FURNACE CO., LTD. (JAPAN)
NIPPON SHOKUBAI INDONESIA, PT. (INDONESIA)
NIKKISO CO., LTD (JAPAN)
NIKKISO CRYO INC. (U.S.A.)
ORGANO ASIA SDN. BHD (MALAYSIA)
REKAYASA INDUSTRI, PT. (INDONESIA)
SATAKE CHEMICAL EQUIPMENT MFG., LTD. (JAPAN)
SK ENGINEERING & CONSTRUCTION CO., LTD (KOREA)
TECHNIP (FRANCE)
TOSHIBA CORPORATION (JAPAN)
TOYO KANETSU K.K. (JAPAN)
TOYO ENGINEERING CORPORATION (JAPAN)
TSUKISHIMA KIKAI CO., LTD (JAPAN)
TUBAN LPG INDONESIA, PT. (INDONESIA)
PT. CHANDRA ASRI PACIFIC (INDONESIA)
VALMET (FINLAND)