Product Description:
1) cast iron cylinder: Material technology from Japan, boron-containing iron, coated sand casting, bright and clean appearance, airway clear, cooling, and momentum strong, and wear resistance.
2) aluminum cylinder: new dual-metal cylinder, cast iron cylinder B, the appearance aluminizing, high-pressure die casting aluminum casing, and then work together very, vacuum to deal with deformation, thermal properties and stability
3) Germany adopted a round mirror platform honing, wall receptacles oily-kai, lubrication, and long life.