AH Marks and Company Ltd has officially opened its new £4 million extension.

The Wyke chemical company has invested the money at the site to produce agrochemical LCPA.

Ian McClelland, managing director at the firm, said: "The conversion of major markets in North America to single isomer phenoxy herbicides establishes a platform for this important range of products.

"The integration of our production process in the new plant will ensure that we continue to be a cost-effective, secure and reliable supplier."

David Bowe, MEP for the Yorkshire and Humber region, added: "This significant investment in a major new production facility underlines the confidence at AH Marks and provides a stable future for its employees, customers and suppliers."

AH Marks specialises in the production of agrochemicals and fine chemicals.

Exports account for more than 70 per cent of the firm's business. The company, which exports to more than 50 countries, has its main customer bases in North America and Europe.