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Room 302, No. 10, Laidun Xiaocheng, Lane 839, Chenhua Rd., Songjiang District, Shanghai, China (Mainland)
LG SIGMA elevator key switch lock DDSA3003937 DDSA3003937D, US $ 1 - 1, China, LG-SIGMA, DDSA3003937.Source from Shanghai Nasen IndustryTrading Co., Ltd. on Waimaotong.com.