... Jingsheng Optics has hundreds of different curve. Supply optical filter from 200nm to 2500nm. Optical glass has color ... of colored optical glass, colourless optical glass, (ray) filter, (colour) filter, heat insulation glass, quartz glass, infra-red glass, ... glass, orange glass, green glass, yellow glass, band-pass filter, and filter specially used in automatic money counting machine! Our products ...