Emulsion and suspension polymerization essentially similar, only to be used a lot more emulsifiers pvc plastic profiles, and are not soluble in water but soluble in the monomer. This polymerization system can effectively prevent condensation polymer particles, resulting in a very small particle size polymer resin pvc plastic profile products, particle size is generally produced PVC resin emulsion method is 0.1-0.2mm, suspension for 20- 200mm. Suspension polymerization initiator system and also different characteristics pvc plastic profiles, usually containing persulfate oxidation-reduction system. The drying method is also designed to maintain a smaller particle diameter mode, often using some spray-drying agent. Since it is impossible to completely remove the emulsifier, and therefore the resins produced by emulsion can not be used for the production of articles that require high transparency, such as packaging films or require very low water-absorbing articles such as wire insulation. Generally the price of PVC resin emulsion polymerization of the resin is higher than the suspension pvc plastic profile manufacturer, however, require the user to use the liquid form of this resin ingredients, such as paste resin. In the United States most of the resin emulsion products are paste resin (also known as dispersion resin), a small amount for latex. In Europe, a variety of emulsion processes are also used to produce general-purpose resins, in particular rolling and extrusion resin. PVC resin is a less stable polymer, will degrade under the action of light and heat, the process is hydrogen chloride evolution, structural changes occur, but the extent of relatively light. At the same time when a mechanical force, oxygen, odors, HCl and some of the active metal ions accelerate decomposition. Polyvinyl chloride resin after removal of HCl, produced in the main chain conjugated double stranded, the color will change. With the increase in the number of hydrogen chloride decomposition, polyvinyl chloride resin, the original white to yellow, pink, red, brown and even black. pvc plastic profile standard, sea Widex (certified), pvc plastic profiles provided by Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is Qingdao, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Widex leadership in the sea with the staff warmly welcome all inquiries negotiations to create sea Widex a better future.