Quartz Glass is made by melting a variety of pure natural quartz (such as crystal, quartz sand, etc.). The coefficient of linear expansion is extremely small, which is 1/10-1/20 of ordinary glass, and has good thermal shock resistance. It has high heat resistance, often used at temperatures between 1100 and 1200 degrees Celsius, and short-term temperatures of up to 1400 degrees Celsius. Quartz glass is mainly used in laboratory equipment and refining equipment for special high-purity products. Because of its high spectral transmission, it is not damaged by radiation (other glass will be dark after being irradiated by radiation), so it is also an ideal glass for spacecraft, wind tunnels and spectrophotometer optical systems. Quartz Glass Quartz Glass,Optical Fiber Quartz Glass Rod,Glass Measuring Beaker,Quartz Glass Slid SHENZHEN HARD PRECISION CERAMIC CO.,LTD , http://www.hardcm.com
Security Door - Long Rui Hua Xin is a modern professional enterprise specializing in production, design, manufacture and sales. The company has advanced production equipment, the company relies on its own strong technology, strength, combined with domestic actual conditions to develop a series of domestic products. The craft is unique and exquisite, the appearance is luxurious and elegant, the quality is sturdy and durable, the installation is simple, and it has the characteristics of anti-corrosion and anti-corrosion. It is the first choice product for residential houses, financial systems, financial archives departments and warehouses.
  After years of unremitting efforts and pursuit, adhering to the " quality, speed, service " corporate purposes, with the " all efforts, continuous improvement " style, began to enter a new era of brand and service. Better product quality, faster delivery time, better after-sales service customer satisfaction is the goal of Long Rui Hua Xin people. Long Rui Hua Xin people's professional spirit is perseverance in pursuit of perfection, dedication Create a safer, warmer and better home for our customers.
Security door
   Rolling shutter accessories 