How to calculate the steps for refining raw materials?

The algorithm steps for refining this medicine are as follows:
1. Material selection: Select raw materials with good quality and high purity.
2. Pretreatment: Process the raw materials to remove impurities and unnecessary parts in order to improve the purity and content of active ingredients.
3. Separation and purification: Use chemical methods, physical methods or biotechnology to separate and purify raw materials to obtain purer pharmaceutical ingredients.
4. Crystallization: Crystallize the purified pharmaceutical ingredients to obtain higher purity and stability.
5. Drying: Dry the crystallized pharmaceutical ingredients to remove moisture and other impurities and improve the stability of the product.
6. Packaging: Standardize, package and store refined pharmaceutical products for storage, transportation and use.