Cable tightener facctory: (Plastic series:PG / M / NPT / MG type) (Metal series: PG / M / NPT / MG type) Cable tightener facctory:(Plastic series:PG , M , NPT , MG type)(Metal series: PG, M, NPT, MG type)(Other series: PG/M, NPT, PG/M, etc.) Cable tightener factory