Quick answer
HR-FR-PVC is a Heat-Resistant, Flame-Retardant PVC house wire. It adds heat resistance (around 105 °C) and flame retardance to standard PVC insulation — a strong, well-priced safety grade for homes and buildings.
The difference from HR-FR-LSH is the 'LSH' part: HR-FR-LSH also gives off low smoke and low/zero halogen in a fire, while HR-FR-PVC focuses on heat and flame resistance. For maximum fire safety choose HR-FR-LSH; for a robust, economical heat-resistant wire, HR-FR-PVC is excellent.
APAR Anushakti HR-FR-PVC is e-beam built for durability; compare with Anushakti HR-FR-LSH.