Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,024 pages of information and 229,410 images on early companies, their products and the people who designed and built them.

Hevac

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The Heating, Ventilation and Air Conditioning Association

HEVAC is a trade association within the building engineering services sector of the construction industry. Traditionally it represents manufacturers and suppliers.



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