Hi, I have to visit a factory for a meeting. Can you kindly advise what kind of VISA I need.

You can apply for a F type for your meeting in China.

You need to provide an invitation letter from the factory, an Invitation Letter of Duly Authorized Entity issued by the factory. Then you need a supporting letter from your company, your bank statement with at least 6 months' despoit, hotel booking & flight tickets (if you are first-time applicant), your valid passport, application form with recent taken photo and your proof of your legal status in Pakistan.

After prepare all of them, you can apply it in the nearby embassy/consulate.