National Union of Sheet Metal Workers, Coppersmiths, Heating and Domestic Engineers; National Union of Sheet Metal Workers and Coppersmiths; National Union of Sheet Metal Workers and Braziers.

1. National Union of Sheet Metal Workers, Coppersmiths, Heating and Domestic Engineers; National Union of Sheet Metal Workers and Coppersmiths; National Union of Sheet Metal Workers and Braziers.
2. Radial Graph