Bis Certification For Polypropylene used in Molding and Extrusion BIS has develop a new standard for Polypropylene used in Molding and Extrusion, As Per IS 10951:2020 BIS Certification is mandatory for Polypropylene. Plastics Manufacturers get BIS Certification from BIS for your product Polypropylene. Aleph India gives experienced advice and assistance in streamlining the certification process. Manufacturers who obtain BIS Certification for Polypropylene meet the required standards and differentiate themselves in the market, giving them a competitive advantage.