Paper employment notice usually needs to include: magazine name, paper name, paper number, publication date, writing date notification bookmark, magazine seal, etc. If payment is required, the details of payment will be explained in the text or annex of the notice. Some only charge the publishing fee, while others need the production fee, postage and audit fee. The charge of each magazine is different, which we should face up to. The most direct way to identify the authenticity of a paper employment notice is to call the magazine, and the editor of the magazine will tell you.
Some authors did not contribute to some journals, but received employment notices. This situation can basically be judged as fraud. Don't trust similar letters sent by some journals, such as paper employment notice, paper award notice, mutual remittance, etc. If you want to publish a paper in an official domestic journal, you should check whether the magazine indicates the unified domestic serial number. Official publications published in China should indicate the number of domestic unified continuous publications on the edition filing page, that is, the number of domestic unified continuous publications, referred to as CN number for short. The front part of the domestic unified serial publication number consists of prefix CN and 6 digits.
Magazines usually publish papers on time according to the schedule written in the employment notice, and then mail the sample magazines to the authors. If the authors think they don't really want to publish this publication, they can pay nothing and it won't make any difference.
I hope it helps you.