It would be difficult with complex shape to use prepreg mat or RTM process without having resin-starved or resin-rich area, compromising performance.

Relying upon the rich salt resource of Yexian, in the project, caustic soda can be mined on the spot to produce ion film caustic soda and PVC resin, which can reduce greatly the production cost.

Based on the rich PVC resin resource, the project enjoys advantageous conditions and large potential.