Tianjin Free Optic Photoelectric Technology Co., Ltd. Manzil D6-A-201, Sharqiy tuman, Huigu sanoat parki, 1-sonli Xuefu g'arbiy yo'li, Xuefu sanoat zonasi, Xiqing tumani, Tyanjin, Xitoy. Elektron pochta admin@free-optic.com Telefon Sotish: (86-22) 8137 0773 WhatsApp WhatsApp:86-131 1008 9902
