1. Die wear: Long run life-time service on moulds, effect products' quality and precise.

  2. Moulds Slanting: Moulds Skew, effect products final Dimensions.

  3. Moulds Deformation: Heavy Pressure and Lower Strength Moulds material.

  4. Moulds Broken: Highly Strength pressure make the Moulds Broken.

  5. Bad Surface: Burrs or Impurity sticking on the Moulds.