- Top company:
- Gujiao Hmois Co.,Ltd
- Hangzhou Antai Bs Electrical Co., Ltd.
- Shenzhen BERSN Opto-electronics Co., Ltd
- Changsha Wontech Machinery Engineering Co.,Ltd
- Xi'an Yunyi Instrument Co., Ltd
- Laizhou Huali Arts&Crafts Co.,Ltd
- Wuxi Singo Electromechanical Equipment Co., Ltd
- Zhuzhou Kunrui Carbide Co.,Ltd
- Zhejiang Hengsen Industry Group Co., Ltd.
- Qingdao Shishuo Industry Co., Ltd.