86-028-85874433
No. 168, Konggang 2nd Road, West Airport, Shuangliu, Chengdu, Sichuan, China (Mainland)
77mm Variable Neutral Density 2-400 (1-8 stops) Adjustable ND FilterVariable Neutral Density Filter, US $ 16 - 30 / Piece, 77mm, RoHS, YOPHY.Source from Chengdu Yafei Optical Instrument Factory on Waimaotong.com.