Zirconia Ceramics, Aluminum Ceramics, Ceramic Plunger manufacturer / supplier in China, offering 96% Al2O3 White Materia Ceramic Spindle Reliability and Cost-Effectiveness Ceramics, Sink Hole Provides Customized Size Range Ceramic Plunger 45-180mm Length, Through-Hole Type Provides Customized Scope Outside Diamete 12-45mm Ceramic Plunger and so on.