Filter bag cage material is carbon steel wire normally. There will be oil stains on the steel wire surface before treating. If there is moisture, rust will appear on the wire.
Pickling is to remove oil, dirt and rust from wire, and to increase silicone spray adhesion. Just like a lady doing facial cleaning before making up, only after doing facial cleaning work very well, makeup will be more natural and clear.
The organic silicon filter bag cage after pickling and leaching has strong antiseptic property and high temperature resistance and longer service life than ordinary silicone spray.
