All on-site construction, for example drilling, concrete construction and installation, welding, brazing, annealing is to be constructed according to detailed specifications for approved customers.
All site work, for example excavation and concrete construction, installation, welding, brazing, heat treatment, is construction in accordance with the detailed specifications of the customer approved.
For example, all of the construction site with excavation and concrete construction, erection and welding and low heat treatment, a detailed customer approved in accordance with the specifications and construction.