国产成人国拍亚洲精品,伊人久久大香线蕉在观看,性欧美乱妇come,菠萝菠萝蜜视频中文字幕,国产欧美国产综合每日更新,又大又硬又黄又刺激的免费视频,极品少妇高潮到爽,国产下药迷倒白嫩丰满美女bd,范冰冰高潮喷水在线播放,亚洲av福利天堂在线观看

Name:BP-2

CAS NO:131-55-5

Molecular formula:C₁₃H₁₀O₅

Molecular weight:246.22

Purity(%):99

Melting point(°C):NA

Application: widely used in polyester, paint and cosmetics. In recent years, the application of fabric has been paid more and more attention by textile industry.