As a kind of toxic heavy metals, lead to human body harm is very big, but it exists in many corners of life, construction pipeline is one of, lead in plastic service pipe salting out will directly cause the heavy metal pollution of drinking water, at present, Beijing and Shanghai has passed a resolution to ban lead in the feed pipe.

           In 2004, the ministry of construction made it clear that the UPVC pipe used in {Today Hot} supply pipe must be non-lead salt stabilizer. European countries such as Norway, Finland, Sweden, Denmark and the United Kingdom have been using lead salt stabilizers since 2000.

              As people know more about lead salt pollution, other PVC products that use lead salt as stabilizers are also faced with a total ban on lead. The power department has decided that the CPVC power protection tube, which is within the license scope of the power department, is prohibited from using lead salt and organic tin stabilizer to prevent environmental pollution.

              Plastic heat stabilizer production enterprise in our country at present, there are more than 200 domestic large-scale production of heat stabilizer has 40 ~ 50 kinds, and low lead salt heat stabilizers of absolute dominance, 60% of the industry enterprise mainly manufacturing lead salt heat stabilizers, more than 80% of the PVC products or use the lead salt stabilizer, the dosage of up to 70000 tons a year.

         With the global environmental protection and health consciousness gradually strengthened, plastic heat stabilizer will toward the low toxicity, no pollution, composite and efficient development, including calcium/zinc compound stabilizer is a kind of competitive products. Some foreign calcium/zinc stabilizers have better performance, and the prices in China are higher, but the amount of products in the products is relatively small, only 2-3 copies. At present, many manufacturers in China use German products.

           In order to adapt to the lead of the situation requires, heat stabilizer production enterprises in China should intensify the product structure adjustment, as soon as possible to develop low toxicity, no pollution, composite and efficient heat stabilizer as lead salt substitute products.

         "It is the trend of China's plastics industry to promote the environmental protection process of thermal stabilizer and accelerate the ban of lead in PVC products industry." China plastics processing industry association executive vice President of Cao Jian said, accelerate the process of environmental protection of PVC product industry is not only the external environment demands for plastic processing industry, and plastic industry to speed up structural adjustment, strengthen innovation ability to drive, to achieve industrial upgrading and inner demand of sustainable development. Plastic products are closely related to people's life and ensure the safety of plastic products. It is the social responsibility and obligation that the plastics industry must bear.

          At present, the lead work of the plastics industry in China is advancing in an orderly way, and we have made encouraging progress in children's toys, water supply UPVC, electronic information products and artificial leather. But from plastic association branch of plastic auxiliary agent to provide statistical data, heat stabilizer in 2012, more than 50, ten thousand tons of production, the proportion of the lead product is less than 20%, the market share of the lead salt stabilizer still occupies the absolute dominant position, the lead stabilizers is confined to have passed the national standard clear ban lead several varieties and PVC products exported to Europe and the United States and other countries. There is still a long way to go for the environmental protection of PVC products in China.