86-431-81323204
Lvdi Main Square, No. 1088, Nanhuancheng Road, Changchun, Jilin, China (Mainland)
Concave Diffraction holographic grating bk7 k9 glass, US $ 12 - 18 / Piece, Jilin, China, SUNDAY, SGR.Source from Changchun Sunday Optoelectronics Co., Ltd. on Waimaotong.com.