The BIS CRS certification is mandatory for electronic and IT products falling within the purview of India's Compulsory Registration Scheme. It is essential for the manufacturer to make sure that his products conform to the required Indian standards and testing procedures. This usually requires testing of products through recognized laboratories, preparation of technical documents, making applications, and undergoing registration procedures of BIS. Professional consulting services can assist you in understanding the applicable standards, testing, documentation, and registration processes. It is important for manufacturers and businesses which intend to sell their electronic products in India.