Product：

　　HS Grade Infrared Optical Fused Quartz
　　Jinzhou Maiteng Quartz HS Grade (identical to JGS3) is a high-purity infrared fused quartz which is manufactured by fusion of naturally occurring quartz crystal in an electric vacuum furnace,resulting in a material with low [OH](＜5 ppm) and low bubbles, inclusions and striae.
　　Due to the low [OH] contentm, HS Grade has excellent optical transmission in the infrared, with a useful range from 260 nm in the UV through to 3500 nm in the infrared.
　　HS Grade was awarded the China National Silver Medal for its excellent quality.
　　Available Forms
　　Ingot  Ingots and ingot sections are available in a wide variety of sizes and shapes  up to a maximum size of 1500 mm × 800 mm × 80 mm and maximum weight of 210 kg 
　　Rod  Core drilled rod is available in a wide range of diameters. 
　　Components  Discs, plates,blocks and special shapes with machined or polished surface finish.