Danfast Limited. The company, based in Kingston Upon Hull (City of Culture 2017), is a supply company established in 1983. Initially a successful supplier of fixings and fastenings to a large distribution network, we have over the last 15 years developed our business to become a key product supplier to the Portable Accommodation and Leisure industries. Danfast has had ISO 9001:2008 certification for Quality Management Systems since 2002. This ensure that we have procedures in place that result in us providing our customers with a consistent, high quality service.