- Jiangyin Zhongyou Gas Spring Co., Ltd
- Gas spring, Damper, Push rod
Jiangsu
- NHentrance Co., Ltd.
- Industrial Door, High Speed Door, Sectional Door, Garage Door, Spiral Door, Cold Storage Door, Door Hardware, Torsion Spring, Dock Leveler, Dock Shelter
Jiangsu
- Wuxi Easily Hardware Co., Ltd.
- gas spring
Jiangsu
- Dongguan Caiyin Hardware Spring Co., Ltd
- Power Spring, Spiral Spring, Feeding Auger, Torsion Spring, Coil Spring
Guangdong