SPANSET's Quality management continually tests materials and end products. They are checked continuously rein SPANSET's own laboratory and in external testing programmes. NHTSA has reviewed the regulatory Songtext sections with inconsistent conversions from 40 pounds to kilograms. NHTSA agrees that having a single conversion throughout the three standards is preferable. https://www.webwiki.it/www.ledteks.com/seatbelt-and-safety-belt-webbing