Quartz glass etching powder Torlin quartz glass etching powder st-102 is specially made for highly-pure silicon-dioxide-quartz glass , such as: quartz halogen, tungsten lamps etc. St-102 quartz glass etching powder, based on industrial grade hydrochloric acid, can be used at indoor temperature. The quartz halogen lamps frosted by st-102 are white and soft. 25kg/plastic bag, 40bags/lot
