The plastic forming theory and experience to design precise molding cavity size, to ensure that the product is cooled amorphous, does not generate much resistance. In order to meet market demand, improve the utilization of the production line has successfully developed a dual-chamber into the mold cavity four main sections and Auxiliary profile die. dual chamber main profile die with a convenient operational features stable production. Factories have been respected 'science and technology are primary productive forces' of the maxim, technology and development, quality and customer, a reasonable cost, sincere cooperation with customers.