This Carmarthenshire firm has made more than 23,000 glass-reinforced buildings since it was set up by David Jenkins, 74, in 1993. Its specialist composites are used to protect buildings and containers in harsh environments, and include coatings to contain nuclear waste and structures that can withstand extreme weather conditions. The company has benefited from a buoyant construction industry, with exports hitting £3.2m in 2015. It is now run by David Jenkins, 52, the founder’s son.

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Company details
Year2017
Rank6
CompanyQuinshield
ActivityIndustrial building manufacturer
LocationCarmarthenshire
2 yr av intl sales growth % pa149.05%
International sales £000s3,218
Total sales £000s8,546
Staff101
Founded1993
Websitewww.quinshield.com

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* Supplied by company † Annualised figure