在线国产亚洲观看_日韩中文在线欧美日韩一区二区_欧美性爱黄在线观看_4399视频在线观看免费完整版_中文字幕亚洲欧美无线码一区_精品无码午夜福利理论片_最新国产麻豆福利在线观看_久久精品中文字幕视频_国产av伦理三区_337p日本欧亚洲大胆胆噜噜

Newlife specializes in the research of high-energy ray absorbent and lead-free shielding materials for more than 10 years. Our γ-ray protective core material is a light weight, flexible and eco-friendly, aimed for nuclear energy and nuclear emergency preparedness. It is composed of γ-ray absorber and polymer material, which can effectively replace traditional lead board and rubber materials.