lock cylinder 1, material: stainless steel, iron 2, tooling: PM, MIM 3, high quality, high precision 4, reasonable ... The lock parts of powder metallurgy we make include lock cylinder, lock bolt, lock tube, lock striker, coded lock keyboard and ... :ISO9001:2000Quality system CertificationQC080000Environmental System CertificationTS16949Management System Certificationlock parts:lock cylinder: