Unsaturated polyester resin thermosetting resin. It's liqud made up of unsaturated dibasic acid, saturated Polyalcohol, polyphosphoric polymer and compound unit. It becomes hard indiscerptible plastic by mixing with hardener accelerant, cure crosslinking in normal temperature, or ...

China Tire Valve & Rubber Manufacturer,which is a professional manufacturer producing varieties of tyre-use rubber-mat valve, natural rubber and butyl colorful valve non-inner tyre was established in the year 1997. Our company had imported best international advanced level production ...