This program takes PVC plastic and wood fibre filling (wood powder) as core raw material (they make up over 94%), then they are made to wood-plastic compound sheet material through special extruder, mould and craft. According to related data statistics, in 2000, the required timber quantity of our country was over 1 billion cubic meters, while the market supply quantity was only over 60 million cubic meters, the difference achieved about 40 million cubic meters.

The only way to settle it is as follows: On one hand, encouraging timber import, on the other, looking for timber's substitutes through new materials' research and development, as a result, the wood-plastic compound products made by timber's leftover material, sawdust and wood powder become first-choice ones.