Polyether diol mainly adopts polytetramethylene ether glycol ( PTMEG ).聚醚二醇主要采用聚四氢呋喃醚二醇 ( PTMEG ).Polyhexamethylene adipate diol and Polyurethane aquocmulsion based on the polyester are prepared.以己二酸、己二醇为原料合成聚己二酸己二醇酯二醇,并...
The piece goods are to be wrapped in kraft paper, then packed in wooden cases.布匹在装入木箱以前要用牛皮纸包好.Packing: kraft bag liner, carton or as each customer's requirements.包装: 牛皮纸复合袋, 纸箱或根据客户的具体要求.Optimum conditions of kraft...