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Highborn International Co. has registered in Hongkong as a professional quartz glass company who have advanced quartz glass technology and expertised R&D team, plant in China mainland and sales team. Our company have three branches and is cooperating with many quartz glass tube manufacturers in Donghai county of Jiangsu Province, CN. which is known as the Hometown of Crystal and the Manufacturing and Distributing Center of Quartz Glass Tube.