聚酰亚胺多少钱一公斤?
3-羟基丙腈 3-hydroxypropionitrile
肉桂酸甲酯 methyl cinnamate
3-丙酸甲酯 methyl 3-phenylpropionate
丙二腈 malononitrile
1,3-丙二胺 1,3-propanediamine
1,1,3,3-四甲基胍 1,1,3,3-tetramethylguanidine
烯丙基氰 allyl cyanide
丁腈 butyroiutrile
1-丁胺 1-butylamine