... years experience 4,20000 cycles a year 5,OEM welcome N-2 lock gas spring Xiongfeng is a leading manufacturer of ... aircraft2, maintenance free3, surface finish: Nickled-plate, chromed-plate, powder paint, oven paint, Galvanized, oil anti-rust, etc.4, material: steel, aluminium ... :2008 International Quality System Certification of SIRA International Authentication institute. N-2 lock gas spring