1. Refined petroleum

After the petroleum products are washed with sulfuric acid, some acidic substances must be washed with sodium hydroxide solution and then washed to obtain refined products

Ii. Printing and Dyeing

Third, textile fibers

4. Paper Making

5. Improving the soil with lime.

6. Chemicals and chemical reagents

Seven, rubber, leather

8. Metallurgy, electroplating

The role of other aspects