부자재류 너트(Nut) Lock Nut / Swaging(Crimping) Nut외 오링(O-ring) NBR / HNBR / VITON / EPDM / SILICONE / FPM / CV75 / KALREZ / CR 플라스틱 사출 제품(Plastic Injection parts) PVC / PE / PET / PVDF / PTFE / MC NYLON