人员在产品升级中至关重要，他们必须经过培训，熟悉各自的职责，了解整个产

Personnel are crucial in product upgrades, they must be trained, familiar with their responsibilities, and understand the entire product upgrade process. Although there are enough personnel, it is best not to replace them halfway, so as to avoid project losses or delays caused by newly replaced personnel who are not familiar with the business. At the same time, personnel must have professionalism and be able to accept irregular overtime, which is conducive to the advancement of the project.

Personnel are crucial in product upgrades, as they must undergo training, familiarize themselves with their respective responsibilities, and understand the entire product upgrade process. Although there are sufficient personnel, it is best not to replace them midway to avoid project losses or delays caused by new personnel being unfamiliar with the business. At the same time, personnel should have a sense of professionalism and be able to accept irregular overtime, which is conducive to the progress of the project.

Personnel are very important in product upgrading. They must be trained, familiar with their respective responsibilities and understand the whole product upgrading process. Although there are sufficient personnel, it is best not to change halfway, so as to avoid the loss or delay of the project caused by the unfamiliar business of the newly changed personnel. At the same time, the staff should have professionalism and be able to accept irregular overtime, which is conducive to the promotion of the project.