- Fushun Yanlai Safety Door Co., Ltd.
- 全国主营:Safety door, Building intercom electric control door
- Handan Quanshan Casting Co., Ltd.
- 全国主营:Castings
- Shanghai Renmin Electrical Co., Ltd.
- 全国主营:Power supply product, Circuit breaker, AC contactor, Low voltage electrical appliance.
- Shanghai Rongjin Trade Co., Ltd.
- 全国主营:Hardware, Mechanical and electrical products
- Linqu Yingzi Building Material Fittings Factory
- 全国主营:Rolling shutter door fittings, Light steel keel ceiling fittings
- Beijing Xuji Changwei Company
- 全国主营:Super deluxe electric retractable gate without track, Deluxe stainless steel electric retractable gate, Intelligent type electric vehicle-stopping bar, Rubber deceleration cushion, High & low-voltage
- Yangyuan Zhenyang Machine Works
- 全国主营:Fine castings, Ironcasting, Steel castings, Small-sized carbon dioxide machine.
- Shanghai Nong'ao Power Plant Equipment Co., Ltd.
- 全国主营:Pipe connector
- China Building Research Academy Building Mechanization Institute
- 全国主营:NC reinforcing steel bar bending machine, Automatic reinforcing steel bar net welding system
- Tangshan Zhongxin Composite Materials Co., Ltd.
- 全国主营:Composite material
- Hunan Huantong Technology Co., Ltd.
- 全国主营:Mobile communication equipment
- Yandu Panhuang Dasun Foundry
- 全国主营:Cast
- Suzhou Siyuan Environmental Protection Engineering Co., Ltd.
- 全国主营:Environmental protection equipment
- Suzhou Qili Electrical Appliance Co., Ltd.
- 全国主营:Switch cabinet
- Suzhou Dongsheng Steel Window Factory
- 全国主营:Door and Window
- Yixing Shanjuan Metal Foundry
- 全国主营:Iron casting
- Yixing Dingshan Forge Plant
- 全国主营:Forging
- Yixing Xiyi Spring Factory
- 全国主营:Spring
- Yixing Energy Saving Water Supply Equipment Factory
- 全国主营:Variable frequency speed regulating water supply equipment, Pressure water supply equipment, Air pressure tank, Variable frequency constant pressure water supply equipment, Air pressure water supply e
- Yixing Kaida Capped Head Factory
- 全国主营:Capped head for pressure container