1. Dissolution, mixing and dosing of coagulant, coagulant aid and disinfectant in water supply project.
2. Kev npaj thiab noj ntau yam tshuaj acid-puag.
3. Kev npaj thiab noj cov tshuaj regeneration hauv softening thiab desalting dej kho.
4. Kev npaj thiab noj cov dej txias txias stabilizer.