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No. 168, Konggang 2nd Road, West Airport, Shuangliu, Chengdu, Sichuan, China (Mainland)
Square filter Nd filter ND2 ND4 ND8 ND16 ND32 camera lens filter, US $ 31 - 40 / Piece, 49mm, RoHS, Sgs, YOPHY.Source from Chengdu Yafei Optical Instrument Factory on Waimaotong.com.