a级国产大片在线免费观看專業從事互動視頻_欧美日韩国产主播在线_欧美亚洲日韩理论片在线_中文字幕第二页_国产精品麻豆影院_在線觀看免費三級無碼_亚洲日韩av成人影视一区_(凹凸視頻)久久精品免费_军人野外吮她的花蒂无码视频_中国gay男男av毛片免费看

The special chemical protective clothing has the properties of flame retardant, heat aging, cold resistance, gasoline resistance, radiant heat penetration resistance, insulation, waterproof and strong sealing. It can effectively resist toxic gases such as chlorine, ammonia, hydrogen cyanide, military gas, mustard gas, sarin and nerve gas. Breaking strength: warp direction 1642.8N, weft direction 1044.1N, tear strength: warp direction 28N, weft direction 23.8N, flame retardant performance: afterburning time <2s, smoldering time <2s, carbon loss length <50mm.