Sufficient maintenance spare parts and special tools for muffler equipment shall be provided, which cannot be used during installation. 2) All accessories, parts and Chinese operation and maintenance manual required for the test shall be provided together with maintenance spare parts. 3) The alternating current used by all testing equipment shall be 50 Hz, 220 V, single-phase, three wire, and can work normally under 10% differential pressure. After the commissioning of the equipment, tools and corresponding toolbox shall be submitted to the owner. Provision of data: General requirements for documents and data: all official documents provided by the seller, including drawings, technical documents and standards, shall be in quadruplicate or a certain quantity specified in the contract. The Chinese version shall be provided and the international system of units shall be used. Contract number, drawing number. And document number. Inspection marks marked by the Seller shall be marked on all drawings and technical documents submitted. Drawings of any item of equipment shall be marked with the name of the manufacturer. The drawings and documents submitted shall be clear and complete and meet the requirements of the above two items, otherwise the buyer has the right to refuse. The buyer will not approve the documents and materials of drawings and technical documents inconsistent with the contract requirements in the bidding process: copies of ISO9001 and ISO14001 certificates. Qualification certificate of equipment manufacturer, identification certificate of exhaust muffler and products provided in the bidding document. The bidder shall provide detailed and complete supply list of the equipment supplied. Equipment specific structure drawing, product sample, specification, selection manual, etc. Main standards for equipment design, manufacture, inspection and test. Main performance parameters and performance curve of the equipment. Provide authorization and test report of black smoke processor. According to the manufacturing process requirements, the equipment manufacturing cycle, test cycle and delivery time are listed. List of special tools and spare parts for random maintenance. List of manufacturer's name and production location of main supporting equipment of muffler manufacturer. Resume of the person responsible for completing the project, including title, position and brief personal information.