The coatings in which common CaCO 3 is replaced by a certain amount of nano -CaCO 3 have no extra in cost with improved performance.
以适量纳米碳酸钙代替通常使用的普通碳酸钙，制得的聚氨酯防水涂料产品成本不增加，但性能得以改善。
The coatings in which common CaCO 3 is replaced by a certain amount of nano -CaCO 3 have no extra in cost with improved performance.
以适量纳米碳酸钙代替通常使用的普通碳酸钙，制得的聚氨酯防水涂料产品成本不增加，但性能得以改善。
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