日韩高清中文字幕,亚洲乱码国产乱码精品视频,黄色一级片子,www久久久久久,国产调教91,韩国三级一区,少妇性色淫片aaa播放

curved ceramic bulletproof plate

  • Hot

    Silicon Carbide Bulletproof Sheet

    Silicon carbide ceramics have been used as one of the ideal materials for bulletproof plate because of their high hardness and light weight. It has better mechanical properties, oxidation resistance, higher wear resistance and low friction coefficient, in addition to its good thermal stability,high temperature strength, low thermal expansion coefficient, high thermal conductivity and good thermal shock resistance and chemical corrosion resistance and other excellent characteristics, has been favored by military experts in various countries, and is widely used

    Email Details
Get the latest price? We'll respond as soon as possible(within 12 hours)

Privacy policy