... Good light transmittance Certification: ISO 9001, ISO14001, OHSAS18001This Lighting quartz pipe has the typical characteristics of hiht purity, good ... <22025528031535038590780%89919393939393.293.4 Application: This large diameter quartz is widely used in halogen lamps, mercury lamps, ... lights, water treatment lamp casing, all kinds of quartz vessels, pipelines and other fields.If you are interested ...