we offer the 66 casment series Plastic profiles ZhongDe Plastic Profile adopt Germany advanced producing process and formula and select State high standard raw material, American Dupont Titanium ,British Stabilizer ,Switzerland Anti-UV absorbent and Spain ultramarline to make sure the reliable Physical Properties and smooth finish and the products index accord with the requirements GB/T814-2004.With the development of the technology and the advanced Flex coextrusion new technology and new process, the company achieves the sealing strip and profiles integration and has greatly improved the water resistance performance, air permeability resistance performance and permeability performance, overcoming the following defects, such as sealing strip shrinkage and joint laxity.