Circumstances in which application for extension, change or reissuance of a visa or residence permit may be entrusted to others
Where a foreigner files an application for extension, change or reissuance of a visa or residence permit, the applicant shall go through the relevant formalities in exit-entry administration divisions of the public security authorities in person. In one of the following circumstances, the inviting entity or individual, the relative of the applicant or the specialized service agency concerned may apply for extension, change or reissuance of a visa or residence permit, or apply for a stay permit on behalf of the applicant:
(1) The applicant is under the age of 16 or over the age of 60 or it would unduly inconvenience the applicant due to illness or other reasons;
(2) The applicant’s current entry is not his or her first entry into China and the applicant has a good record of stay or residence in China; or
(3) The inviting entity or individual has guaranteed to cover the necessary expenses of the applicant incurred in China. 26. Validity period of health certificate for the application for residence permit
When applying for a residence permit valid for more than 1 year, a foreigner shall, in accordance with the relevant provisions, submit his or her health certificate. A health certificate is valid for six months beginning from the date of issue.