Lianyungang Langston Quartz Glass Co., Ltd. is located in Donghai city, which is known as the "Quartz Center" in China. Our company is one of top enterprises integrating research, production, design and marketing in silicon resource field. We enjoy very convenient sea, land and air transportation access. Up to now, our quartz products have been well received in more than 20 countries and regions. As a professional manufacturer, we produce quartz tubes, quartz crucibles, high-purity quartz ...   |