(1) Check the authenticity of the visa. Generally, the written visa materials are signed and sealed by the owner's on-site representative, contractor and supervision engineer. The audit found that many visas imitate handwriting, copy in disguise, and some people do ghosts in the process of endorsement. If a project visa is found in the audit, the copy of the visa provided by the owner and the contractor is inconsistent. After repeated verification, it was found that some visas did not match the actual situation of the project. After investigation with the site representative of the owner, it was found that the signature on the visa provided by the contractor was signed by others imitating their handwriting. Therefore, when examining the visa, we must first confirm the authenticity of the signature, seal and copy.
(2) Check the legality of the visa. For example, whether the visa is stamped by both parties, whether the seal is forged, and whether the copy is consistent with the original are all important contents of the audit. Visa is a compensation or dynamic adjustment of the contract by the owner and contractor during the project implementation, which is equivalent to a supplementary contract. As audited data, it has the same legal effect, so it should be complete and true in form.
Further reading: Weak current systems include: ccTV monitoring system, burglar alarm system, access control system, electronic patrol system, parking lot management system, visual intercom system, home intelligence system and security system, background music system, LED display system, plasma splicing screen system, DLP large screen system, three-meter CC system, building automation system, lightning protection and grounding system, paging intercom and professional intercom system, weak current pipeline system, UPS uninterruptible power supply system, computer room system, integrated wiring system, computer local area network system, property management system, multifunctional conference room system, cable TV system, satellite TV system, satellite communication system, fire fighting system, telephone communication system, hotel management system, video-on-demand system, human resource management system, etc.