Signature: in this case, I can only say that I have seen it, and the relevant person has not expressed his consent. \x0d\ Signature+consent: The word "consent" seems simple, but its meaning is vague. Do you agree that the quantity quoted by Party B is true, or do you agree with the unit price quoted by Party B, or both? If the employer authorizes the supervisor to manage the project in the contract, only the visa signed by the employer is invalid. If the supervisor also signs the visa, the result of the visa may be that the engineering quantity is approved, but the unit price may not be approved after the audit, and the cost engineer may countersign it. \x0d\ Signature+Truth: If the opinion signed by the employer is true, it can only be used as evidence of the claim for expenses and construction period, not as a visa. Whether the cost can be increased or the completion date can be postponed depends on the contract and other evidential materials. If the above situation is true, the employer and the cost engineer will review the legality of the settlement content according to the settlement method of the contract. If there is a phenomenon of double pricing, the Employer and the cost engineer can completely refuse to settle the double pricing part, because the above situation is true only to illustrate the existence of facts and cannot fully confirm that the listed items can be settled. \x0d\ The supervisor often thinks that the situation is true just to witness that what the contractor has done is true, and the quantities and prices are recognized by the employer himself, because the employer thinks that the supervisor will speak for the contractor and is afraid of too much management. \x0d\ Signature+The above information is true, and settlement is agreed: the employer has confirmed the existence of the fact and agreed to pay the fee for the fact. If double pricing is caused by the visa officer's mistake, the cost engineer shall submit the problem to the employer and the contractor for negotiation. If the two parties fail to negotiate, the cost engineer can generally only think that the employer is willing to pay the extra cost for some reason to subsidize the contractor. \x0d\ Principles that must be observed in visa application: \x0d\ Drawings (sketches, schematic diagrams) can be attached, and visa application in simple text form should be avoided as far as possible; The visa should be based on evidence as far as possible, and the visa should be drawn as much as possible. \x0d\ Avoid directly signing the results (including directly signing the quantities) if you can sign the facts; \x0d\ If you can sign the quantities, avoid signing the unit price directly; \x0d\ Avoid signing the total price directly if you can sign the unit price; \x0d\ Fee visa can only be done after the claim procedure, and direct fee visa is avoided. \x0d\ visa is a supplementary agreement at the legal level, which is legally binding on both parties. In the legal sense, only the court has the right to revoke or deny its validity, but the cost engineer can suggest that both contractors reach a new agreement, thus rejecting the original fake visa. \x0d\ Directly sign and examine the total price or unit price visa. For the supplementary project visa in the form of unilateral cost or total price, the cost engineer can generally adopt the confirmation method of engineering quantity and material price visa, first review the engineering quantity and material price, and then refer to the national quota standard and relevant documents for calculation. The unilateral fee and total price of visa are higher than the calculation result. If there is no special reason, it is suggested that both the contractor and the issuing party overturn the original visa, reach a new visa (if confirmed according to the calculation results) \x0d\ directly sign the results (including the engineering quantity) for visa review. According to the calculation rules of engineering quantity, the authenticity of signed engineering quantity can be checked. If the quantity of work is not true, both parties of the contractor can still be advised to re-visa. \x0d\ Sign only a written factual visa. For visas that only state the actual construction situation of the project from a technical point of view, there is neither a clear quantity of work nor a clear value. Cost engineers should review such visas from an entry point; First of all, consider whether this item needs to be added and whether it is calculated repeatedly; Definition method: analyze and confirm whether the owner's on-site representative knows that a certain content really happened during the construction process, and if so, whether the content is included in a certain quota subtitle of the original budget, explain it clearly after analysis and confirmation, and then define it and calculate it accurately. \x0d\ Sign written facts and attached drawings (sketches and schematic diagrams) for visa review. In this way, if the audit content is true, it can be carried out by general audit methods.