Structure 

Letter Definition (Universal Standard)

• B: Building / Fixed wiring cable
  
  
• V: PVC (Polyvinyl Chloride) insulation or sheath
  
  
• R: Flexible stranded copper conductor (soft type)
  
  
• FR: Flame Retardant
  
  
• LSZH: Low Smoke Zero Halogen
  
  

1. Model: BVR

• Full Name: Building wire, PVC insulated, flexible conductor
  
  
• Structure: Cu / PVC / No outer sheath
  
  
• Construction:
  Single-core, flexible stranded copper, only PVC insulation, no outer sheath
  
  
• Characteristics: Soft, single-core, general-purpose
  
  
• Application: Internal wiring, distribution boxes, fixed single-circuit installation
  
  

2. Model: BVVR

• Full Name: Building wire, PVC insulated, PVC sheathed, flexible conductor
  
  
• Structure: Cu / PVC / PVC
• 
  Construction:
  Flexible stranded copper, each core with PVC insulation, with outer PVC sheath
  
  
• Available cores: 1C, 2C, 3C, 4C, 5C
  
  
• Characteristics: Multi-core, flexible, protected by outer sheath
  
  
• Application: Multi-circuit power wiring, control lines

3. Model: FR-BVVR

• Full Name: Flame Retardant flexible multi-core building wire
  
  
• Structure: Cu / Mica / LSZH
  
  
• Construction:
  Flexible stranded copper, fire-resistant mica insulation, LSZH low smoke zero halogen sheath
  
  
• Characteristics: Flame retardant, low smoke, halogen-free, fire-safe
  
  
• Application: Emergency systems, fire circuits, public buildings, high-rise safety wiring