1. Instruction CR-39 flat resin is made up by special craft, its mainly material is resin CR-39 and auxiliary with other materials. 2. Purpose Our products is always popular use in protecting welding goggles and auto- darking liquid crystal glass. It has advantage of strong strength, against impact, don’t cling welding remnant, light weight and coefficient of penetrating ray is above 90% 3. Standard: It satisfy importer’s standard after test of fire resistance, cold or heat and coefficient of penetrating ray . 4.Specifications On the standard thickness of 1.2mm, it has below specifications 108mm×51mm 97mm×47mm 110mm×83mm 108mm×76mm 110mm×90mm 83mm×60mm 133mm×114mm and other specification is produced according to the customer’s requirement.
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