性的小视频在线观看免费,欧美交换性一区二区三区,日本一区不卡在线,国产综合婷婷,香蕉碰碰人人a久久动漫精品,国产福利在线小视频,992在线观看

您的瀏覽器版本太低，將不能正常瀏覽。請(qǐng)升級(jí) Internet Explorer或使用Google Chrome瀏覽器。
如果您在使用雙核瀏覽器，請(qǐng)切換到高速 / 極速 / 神速 核心。
Crude Phenol
Product
2020-03-28
Product Presentation:
Production capacity over 7,000 tons/Y.Through coal tar distillation,extraction & refining process,we can steady produce and suppiy high-quality products.Top and stable quality.
 
 
Use:
Crude phenol is used to produce various chenical products (phenol,cresol,xylenol,etc)widely used as base materials for phenol resin,fire retardants,semiconductor sealer,and insulated varnish.