The process flow diagram
1 raw material -->2. insert -->3. turning -->4. test -->5. laser -->6. test -->7. -->9. -->8. test for coarse grinding grinding -->10. test
-->11. -->12. -->13. die polishing grinding test -->14. test -->15. encoding type -->16. test -->17. packing
Process related equipment
1 testing equipment: diameter measuring apparatus, Norway inspection (CU10) detector, continuous zoom microscope;
2 production equipment: high precision laser drilling machine, high-frequency sleeve machine, CNC machine tools, wire polishing machine, double wire polishing machine, ultrasonic grinding machine, pneumatic marking machine