Due to the low residue, little impurity, the quantitative filter had the best colorgrade.
定量滤纸灰份低,杂质少,显色效果好。
2
The Freezing Unit and the Decolouring Unit are introduced into the process to control the colorgrade of the BA solution and the quality of the product.
The products have distinct quality advantages in stability, content, clarifying degree, colorgrade, crystallization, specific volume, polymer, unity, etc.