QS 9000 was a quality system and certification program for the automotive industry, based on the international ISO 9000 series of standards. In 2016, it was replaced by IATF 16949, developed jointly by the International Automotive Task Force and ISO.
A Quick Changeover Method is any technique which reduces setup time of production equipment. One example is SMED (single-minute exchange of dies). These techniques permit more frequent setups, thus improving flexibility and reducing lot sizes and lead times.