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American Sanvo Chemical Technology Holdings
Ningbo Hi-Tech Smart Pneumatic Co., Ltd.
Hangzhou DAYTAI Network Technologies Co., Ltd.
Wenzhou Hantang Telecommunication Technology Co., Ltd.
Shenzhen KOC Communication Co., Ltd.
Shenzhen Gangming Opto Co., Ltd
HOLIGHT Fiber Optic Co., Ltd.
Dongguan Phynam Comtech Co., Ltd.
Takfly Communications Co., Ltd.
Union Polymer Material Co., Ltd.
Shenzhen Warex Technologies Co., Ltd.
Shenzhen Opelink Technology Co., Ltd.
Shenzhen TRT Fiber Tech. Co., Ltd.
PUNO OPTIC TECHNOLOGY CO., LIMITED