the neutral borosilicate glass tube is our main products which have an outer diameter of 4 mm to 300 mm, which can meet the different requirements of pharmaceutical packaging, daily necessities, electronic products, military industry and solar thermal power generation. USP Type I water-resistant neutral borosilicate glass, acid and water-resistant for grade I, strong resistance to rapid cooling and heat, chemical stability, mechanical strength and impact resistance are better than other glasses. At the same time, the material can be directly sealed with Kovar alloy, which is the core component of solar high temperature collector tube and the key material in military industry. At present, the product quality of our company is stable, and the AI system has been realized in the productions line.