Construction technicians must earnestly familiarity with drawing paper and relevant information on process flow, medium, pressure, temperature and other parameters and use of materials, models, specifications of materials and accessories of aware. Construction personnel must be familiar with construction, construction methods, quality standards, operating procedures and safety requirements, and strict enforcement in the construction. Style the main materials used in pipe, galvanized steel and so on, should be consistent with existing national product standards and enterprise standards for manufacturers, and should have a factory certificate of relevant material, such as proof.