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Qingdao Helm Import and Export Co., Ltd.
Lianyungang Jialei International Trade Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.
Lianyungang City Rong Tai Silicon Carbide Co., Ltd.
Hi Chipper Glass Factory
Jiangyin Entret Coating Technology Co., Ltd.
Lianyungang Shenhui Silicon Mstar Technology Co., Ltd.