1. Double cooling and double heating mold group can make the yields greater and the productivity higher.

2. The temperature of the inner and the outer molds can be adjusted, applying to the demands for the heating of the vamps and the liners of  different materials.

3. The pre-shaped heel set can be glued with the vamp and the liner,  which cannot be unglued easily. The liner can be completely leveled, to improve the quality of the vamp and reduce the rejection rate.

4. Particular obverse mold can be made to be rejects and  re-adjusted type, to remove wrinkles and beautify the shoe opening.