Polyvinyl chloride resin properties, free of metal ions, have good electrical insulation properties and thermal stability. SPVC absolute viscosity divided into six types: XS-1, XS-2 ...... XS-6; XJ-1, XJ-2 ......, XJ-6. Type the meaning of each letter: X- suspension; S- loose type; J- compact; the chart below for the domestic SPVC features. 2, polyvinyl chloride named early in 1835 found pvc plastic pipe supply for the United States V. Leni Ao, produce a white solid when sunlight chloride, namely PVC. PVC was discovered in the 19th century had two pvc plastic tube processing, once Henri Victor Regnault in 1835, and once Eugen Baumann found in 1872. Two opportunities pvc plastic pipe, such polymers are present in being placed in the sun too vinyl chloride beaker, into a white solid. Early 20th century pvc plastic pipe products, Russian chemist Ivan Ostromislensky and Germany Griesheim-Elektron chemist Fritz Klatte Also, try PVC used for commercial purposes, but the difficulty is how to process this kind of hard, sometimes brittle polymer of . Shandong pvc plastic pipe fittings | pvc plastic pipe fittings | sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!