... surface quality 4. the competitive price 5. good reputation ir pass filter1.Material: Black Optical Glass (HWB760, HWB780, ... HWB800, HWB830, HWB850, HWB900, HWB930) and red glass, HB600,HB610,HB630,HB640,HB650,HB670,HB685,HB700,HB720 ... products, infrared detectors, infrared receiver, infrared light, infrared sensor products, security cameras infrared night vision surveillance, such as ...