1, if dealing with headhunters.
Then you can send a pdf to the headhunter first, and then see the headhunter's reaction. If there is no response, it is mostly because the content and format of your resume are ok. If the headhunter needs to adjust the content of the resume, the professional and responsible headhunter will communicate with you in advance, and then let you make necessary adjustments or modifications to the resume and re-publish a pdf to her/him.
If necessary, the headhunter will ask you to give a word version.
2. If you communicate directly with the human resources department of the company,
The suggestion is to send a pdf version, but pay attention to the commonly used system fonts (Song Ti, Microsoft Yahei), try not to use non-embedded fonts, and carefully check both Chinese and English fonts. Also, it is best to go through the actual printing test-print it out to see the layout and various details.
3. If you want to be more secure, you might as well send two resumes in pdf+word and write a summary resume in the text.
The email title of job resume is usually: job intention+name+phone number.