The name, contact address and telephone number of the parties to the contract, including a copy of the project contractor's identity card, a copy of the business license, a certificate of migrant workers issued by the hometown or unit of the construction manager, as an annex to the contract after verification. Decoration project site area and specific construction projects: this clause should be compared with the construction drawings. In the construction process if the need to modify the contract Wei design, must sign a written amendment agreement.