The polyurethane waterproofing paint without tar is produced with certain liquid hydroxylated resin instead of coal tar.
以一定量液态的羟基树脂替代煤焦油制作无焦油型聚氨酯防水涂料。
The polyurethane waterproofing paint without tar is produced with certain liquid hydroxylated resin instead of coal tar.
以一定量液态的羟基树脂替代煤焦油制作无焦油型聚氨酯防水涂料。
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