... 99%, L/D ratio >=20 2. Composite 3. Coating 4. Ceramic Application of Ceramic Knives Special Micron Sic ... and armored car5. Ceramic series: ceramic cutting tool, special purpose structural ceramics, engineering ceramics, functional ceramics, bulletproof ... ceramics6. High-pressure spray nozzle, plunger pump7. Igniter8. Special purpose polishing abrasive9. Electrical industry heating, far infrared ...