BIS certification for homopolymers made of polyvinyl chloride (PVC guarantees adherence to Indian Standard IS 17658:2021. Manufacturers and importers are obliged to satisfy quality and safety criteria. Applications are submitted, factories are inspected, products are tested in BIS-approved labs, and final certification approval comes under line. Important metrics are residual vinyl chloride monomer content, K-value, sieve analysis, and volatile matter. The certification guarantees regulatory compliance and market legitimacy by letting the BIS Standard Mark to be used. The date of required certification enforcement is June 24, 2025. Frequent monitoring guarantees ongoing compliance to BIS guidelines for the manufacturing of PVC homopolymers.