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Quasi-Arc Company, electrical welding, head office Grosvenor Gardens, London SW1.
of Mile End, London (factory).
1915 Name changed.
1932 The company supplied electrodes made from blue asbestos and taught the public how to use them. A welding school had been established.
1939 Bilston factory opened.
1955 Name changed.
1961 Manufacturers and suppliers of manual, semi-automatic and fully automatic electrodes, equipment and installations. 
1968 Bilston plant closed and production concentrated at Waltham Cross.