03 should avoid disputes with source if the coordination failure to implement the will bring unexpected resistance to the project. 'In recent years, photovoltaic field is a high incidence zone disputes. 'High print set to press for example, points out the rule of law weekend', a recent case in a photovoltaic domestic EPC project, contract the fixed unit price per watt of generating capacity, and finally according to the actual capacity calculation of the contract price. At the same time, the quotation list list will need to have some kind of power generation equipment 30. But in the process of the contract, subject to consent by the developer change for 25 units. The project experience finally meets the client requirements. But the auditing department is on the grounds that the contractor fails to provide all equipment in the contract, the fee deducted 5 sets of equipment. 'High seal analysis pointed out that in engineering general contracting mode, the purpose of the bill of quantities is limited to the contract, do not explain, expand mainly as a general intermediate payment reference. In addition to the special contract, not like a traditional construction general contracting mode, directly as a basis for the adjustment of the contract price. 'In practice, many disputes are originated in the early stage of the project of some misunderstandings. 'High print set points out, because the EPC ever more used in industrial field, the function of the engineering and economic indicators relatively clear. But, at present a lot of new project involves civil construction and infrastructure, these projects may not clear economic indicator, but some have stronger externalities, have higher requirements to beauty and unique effect. Early this case, if the developer fails to provide the preliminary design documents, requirements may be difficult to determine the developer, cause the contractor quotation difficulties, will also bring uncertainty to the project. High print made Suggestions for civil construction and infrastructure projects, after the developer to complete the preliminary design of engineering general contracting contract is relatively safe, it will be more conducive to the implementation of the project.