By 2003, the product into the mature period, PVC profiles industry into the transition period, a variety of problems will be exposed. First, many companies blindly invest in herd, and then the enterprises in order to embrace customers, at all lower prices, big fight price war, and ultimately lead to PVC suspension folding door has no profit. So enterprises in order to reduce costs, they had to do the work on the hands and feet, in the formula on the discount, in the thickness of the standard, the size of the big shrink, so that the formal standard PVC suspension folding door was a lot of "parallel" instead So that consumers have doubts about the quality of PVC, and later simply abandoned but not to switch to other suspension folding door.

Feng Yang Zheng said, in fact, PVC suspension folding door than the aluminum alloy door has many irreplaceable advantages. First of all, PVC profiles are in the molten state through the mold extrusion molding, stereotypes, can be formed to achieve the fine structure of various types of structures. Second, this material can be placed by different specifications, the shape of the reinforced steel, PVC plastic window to obtain different wind pressure strength. There are PVC plastic window sound insulation effect is good, good corrosion resistance, good insulation properties.

Feng Yang said that the biggest advantage of PVC profiles is energy saving. From the production of energy consumption of materials, the production of a square meter PVC suspension folding door is only steel 1/8, aluminum 1 / And PVC materials can be recycled for recycling, do not need to re-smelting, ingot, low energy consumption. This is very favorable for the shortage of resources in China.