- Beijing Tengine Innovation Instruments Co., Ltd
- Address:No.8,Dongbeiwang West Road Beijing Beijing 100193 China
- Henan Jianghua Measure Tools Co.,Ltd.
- Address:No.66 Jianghua Road of Shangqiu Economic-Technological Development Zone Shangqiu Henan 476000 China
- Shanghai Zuos Tools CO.,LTD.
- Address:NO.3-1003,28Nong,Zhongjia Rd,Nanxiang,JiaDing,Shanghai Shanghai Shanghai 201802 China
- Yongkang Zhujiang Weighing Apparatus Co., Ltd.
- Address:Gutangli Industrial Zone,Yongkang,Zhejiang,China
- Jinhua Raby Tools Co., Ltd.
- Address:No.6,Yinglong Road, Bailongqiao321000,Jinhua, Zhejian P.R.CN
- Dongguan Hengyu Instrument Limited
- Address:shangliangzhou industrial park,houde,daojiao town
- LIU & SONS INTERNATIONAL
- Address:Rm. 102 No. 82. Lane 1208 Longyuan Rd. Songjiang
- Hangzhou Longma Hardware & Tools Co., Ltd.
- Address:Xinba Village ,Yiqiao Town, Xiaoshan District