1. Candidates who take the supervision engineer exam can sign up for the exam at their domicile or current work place.

2. If the domicile is not in the same province as the current work place, candidates can choose to apply at the domicile or the current work place.

3. The certificate passed is valid throughout the country, so it can naturally be used across provinces.

4. So the special supervision in Shenzhen can be used in Guangdong.