1, technical personnel must master the basic knowledge of additives。

2. Have a basic understanding of the solubility of additives and their stability to hard water and metal ions。

3. The acid resistance and alkali resistance of the additives must be measured。

4, the ionic properties of the additives must be mastered。

5, do not arbitrarily reduce the amount of additives。

6, the auxiliaries must be dissolved and diluted before being added to the processing liquid。