ISI MARK CERTIFICATION FOR PLAIN HARD-DRAWN STEEL WIRE ISI Mark Certificaton is mandatory for Plain Hard-Drawn Steel Wire to get it tested and certified under Indian Standard IS1785 (Part 2) as per BIS. With the team of professionals Aleph INDIA QMS provides the ISI Mark Certificaton to the manufacturers. We are the leading consultant for ISI Mark Certificaton in India with our sister companies Aleph Accreditation and Testing Centre and Aleph Industrial Corporation.