1. The principle is whether directors participate in investment control. In some cases, the supervisor is only responsible for the technical review, so it is necessary to find out whether the scope of your change contact list is to review whether the changed technology is reasonable or not, or whether it includes the price review.

2. If the technology meets the standard and is reasonable, the appropriate way to sign the contract is: "Agree to the mutually agreed (changed) scheme. XXX (signature) "