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Shenzhen Siyuan Digital Technology Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
GIAI PHOTONICS CO., LTD.
Movel Scientific Instrument Co., Ltd.
Shanghai Tongqing Trading Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Shenzhen Xavier Precision Component Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Hunan Puqi Geologic Exploration Equipment Institute (Common Partnership)
Chongqing Clipper Industry Co., Ltd.
Beijing Oriental Wison Technology Co., Limited
Jinjiang Jiaxing Group Co., Ltd.
Rigchina Group Company
Shenzhen Bonad Instrument Co., Ltd.
Taizhou Runlab Labware Manufacturing Co., Ltd.