中文字幕在线播放一区_羞羞视频免费入口网站_色污视频_www.精品一区_韩日黄色片_久久久国产视频

Aerospace More refined and lighter, for aerospace >

Architectural field The flexibility of fluorine film gives the building more curved surface and beauty; Flame retardant of fluorinated wire makes high level wiring safer. >

Medical instrument Fluorine plastics play an important role in medical equipment industry due to its good physical and mechanical properties and chemical stability. >

Electronic and electrical Special plastics are indispensable materials in electronic and electrical industry and play an important role in the application of electronic and electrical industry. >