... 700 mm and Ring of max. OD=600mm. Quarld Quartz Glass Technology Co., Ltd. was founded on the year 1998. ... fused quartz glass, synthetic quartz glass, opaque quartz glass, quartz crucibles, sintered quartz and so on. The quartz glass includes quartz glass roller, tube, rod, ... widely used in semiconductor, photovoltaic, fiber optics, LCD, lamps, glass and so on.The meaning of Quarld is quartz world ...