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保温砂浆中为什么需要添加一点量的羟丙基甲基纤维素,这是因为保温砂浆需要一定的保水作用.
Tel:021-62503072
Domestic trade:021-62503076
Foreign trade:021-62503029
Fax:021-62503097
Chinese website:www.longou-chem.com
International Division:www.longouint.com