Gypsum-based construction products' BIS certification guarantees adherence to Indian standards of quality and safety. Important criteria are IS 2095 (Part 1, 2, 3) for gypsum plasterboards and IS 17400:2021 for glass fibre-reinforced gypsum panels. Applications are turned in, factories are inspected, products are tested at labs approved by BIS, and compliance is verified. Manufacturers get the ISI mark, indicating conformity to criteria, when they meet them. This certifying improves regulatory compliance, market acceptance, and product credibility. Frequent audits and testing guarantee ongoing compliance. Legal trade of gypsum-based products in India as well as quality assurance depend on the certification.