Sewing machines guaranteed to follow Indian safety and quality standards by BIS (Bureau of Indian Standards) certification Manufacturers have to choose the pertinent IS standard, test their products in a BIS-approved facility, and send an application together with supporting documentation. Next to confirm compliance is a factory inspection. Approved, BIS licenses to use the ISI mark, therefore indicating product dependability. Frequent audits guarantee ongoing respect of standards. Selling sewing machines in India requires this accreditation, therefore strengthening customer confidence and market acceptance. Authorized Indian Representatives (AIR) are required of foreign manufacturers seeking BIS certification.