... welding manufacture 2.Approved EN ISO 3834-3, DIN EN ISO 3834-3, ISO9001:2008 3.Benz's supplier welding bus seat back ... welding seat base Quality certificat: ISO9000:2008 , EN15085-2, ISO3834-3 High technique of welding, stamping, bending, coating, injection moldingCompany profileAolin ... in the near future. welded bus seat back support AL-0009