... , durable,ageing resistance & long service life. PPR fitting product usage:Product is the PPR resin as main raw materials, auxiliary agents ... of GB/T19001-2000-ISO 9001:2000 execution.PPR fitting product features:1. Materialized excellent performance.PPR pipes, fittings corrosion resistance, ... iron piping system of comprehensive cost is low.4. The product is given priority to be white, the color and ...