The ISI mark is a certification mark that certifies that a product conforms to an Indian standard developed by the Bureau of Indian Standards (BIS), the national standards body of India. It is mandatory for certain products to be sold in India, such as electrical appliances, kitchen appliances, Portland cement, LPG valves, LPG cylinders, and automotive tires. The mark is by far the most recognized certification mark in the Indian subcontinent
. The ISI mark is issued by the Bureau of Indian Standards (BIS) after proper examination, evaluation, and documentation
