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High Quality Capillary Quartz Glass Tube Borosilicate 3.3 Pipe, US $ 1 - 1 / Unit, zcq, High Quality Capillary Quartz Glass Tube Borosilicate 3.3 Pipe, 99.99% Pure Quartz.Source from Beijing Zhong Cheng Quartz Glass Co., Ltd. on Waimaotong.com.