Stabilus
Suspa
American Gas Springs (AGS)
Bansbach
Lesjofors
Wan Der Ful Co
HAHN Gasfedern
AVM Industries
Hitachi Astemo
Anhui Lant
Vapsint
GAYSAN
Tunalift Gas Spring
Ningbo GasTac Gas Spring Co
Shanghai Boxi
Zhuhai Oudun