The 1. photo file must be a recent bareheaded photo of the candidate's electronic certificate (the certificate photo has a blue background or a white background, in JPG or JPEG format, with a width of not less than 295 pixels and a height of not less than 4 13 pixels).

2. The size is 10K.

3. The background color of the photo is blue or white.

4. The photos are very clear. In order to ensure the clarity of photos, it is forbidden to enlarge photos with unsatisfactory pixels before use.