An electrician can specialise in ____. The ____ will sign the main contract with the client to carry out the work according to the drawings and specification A carpenter can specialise in ____. The sub-contractor will sign a contract with the main contractor to carry out a ____ of the whole job. A ____ can specialise in the installation of under-floor heating. A bricklayer can specialise in ____. A gas engineer needs to be registered with ____. Industrial plumbers will commonly use ____ in the installation of commercial heating systems. A ____ is required to carry out PPM for commercial installations to avoid any unforeseen breakdowns.

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