ISI MARK CERTIFICATION FOR RESISTANCE WIRE, TAPES AND STRIPS Resistance wires, tapes and strips for heating elements fall under the Indian Standards IS 3725 as per the Bureau of Indian Standards. If the manufacturers and importers want to sell or launch their products in the Indian Market, they must have the license granted by the BIS (Govt. of India). To ensure the quality of the products it is required to test and certified the products under the BIS approved laboratories. The team of Aleph India QMS helps the manufacturers or importers to get their products tested and certified under the BIS as per government guidelines.