D&F Corporation is a leading supplier of checking fixtures and secondary machines for the Automotive Industry. Custom machine ... s and fixtures are designed, programmed, build and certified in our temperature controlled 84,000 square foot building in Sterling Heights, MI. ISO 9001:2015 ISO/IEC 17025:2017. D&F uses the latest design software, cutting technology, experienced builders and certified checking standards to produce high quality production tools at a competitive price. read more