Different cable categories
1. Category: h -- local communication cable HP -- distribution cable HJ -- Office cable
2. insulation: Y -- solid polyolefin insulation YF - foamed polyolefin insulation YP - Foam / solid polyolefin insulation
3. Inner protective layer: a - plastic coated aluminum tape bonded shielding polyethylene sheath s - aluminum, steel double-layer metal tape shielding polyethylene sheath V - PVC sheath
4. Features: T -- Petroleum paste filling, G -- high frequency isolation, C -- self-supporting
5. Outer coating: 23 - polyethylene outer coating of double-layer anti-corrosion steel strip wrapped and sealed; 33 - polyethylene outer coating of single-layer thin steel wire armor; 43 - polyethylene outer coating of single-layer thick steel wire armor; 53 - polyethylene outer coating of single-layer steel strip wrinkle longitudinal armor; 553 - polyethylene outer coating of double-layer steel strip wrinkle longitudinal armor.