Zirconia Ceramics, Aluminum Ceramics, Ceramic Plunger manufacturer / supplier in China, offering Through-Hole Type Provides Customized Scope Inside Diameter 6-25mm Ceramic Plunger, High Strength Alumina Ceramic Thermal Insulation Ceramics Parts Resistance to Wear, Precision Material Alumina Ceramic Thermal Insulation Ceramics Parts Ceramic Insulator and so on.