Gauge glass series (Toughened Borosilicate material) Reflex gauge glass/Reflex sight glass Plain gauge glass/Transparent sight glass Round sight glass Asbestos sealing material series Asbestos jointing sheet/Asbestos rubber sheet; Asbestos composite sheet/Composite gasket sheet; Asbestos paper sheet/Asbestos beater sheet; Asbestos packing/Asbestos rope/Asbestos cloth Asbestos sheet;