It is up to your employer, if your employer can get the Working Permit issued to foreign experts by The State Administration of Foreign Experts Affairs and "Invitation Letter of Duly Authorized Unit" or "Confirmation Letter of Invitation" from Foreign Affairs Office, you can apply for China Employment Visa(https://www.travelchinaguide.com/embassy/visa/work.htm) outside of Mainland China, otherwise, it is impossible for you to get a Z visa