The exterior view surface adopts the environmental protection formula ASA color co-extrusion technology, realizes the high performance and the rich color differentiation demand. The surface of the profile is made of the modified resin ASA, which has high resistance to scratch and ultraviolet radiation, and is scrubbing-resistant, easy to maintain, and has good compatibility and weldability, even in harsh conditions, not aging, not layering. Embossed profiles with unique patterns, natural lifelike. And Shengda thong body wood grain profiles, can be said to be the first in the industry, “Always be imitated but never surpassed.”.