They may be merely additions to existing product lines (the first cigarette with a filter tip, for instance) or improvements to existing products (a new whiter-than-white washing powder).

Water flows from the tank to the washing machine to clean clothes, then back through a filter and into the tank to be cleaned and used again.

The position of wash water box of disk filter and distribution area between filtrating and washing are very importand, they must be regulated with operation conditions.