I am 17 years old and come to work in an electronics factory in Shenzhen. Is it against the labor law for the supervisor to ask me to spray paint?

According to the labor law, you should be an underage worker.

Chapter VII Special Protection for Female Workers and Juvenile Workers

Article 58 The State applies special labor protection to female workers and underage workers.

Juvenile workers refer to workers who have reached the age of 16 but not 18.

Article 64 underage workers shall not be arranged to engage in underground, toxic and harmful labor with the fourth level of physical labor intensity stipulated by the state and other jobs that are forbidden.

Article 65 The employing unit shall conduct regular health check-ups for underage workers.

Paint is a toxic and harmful chemical, and it is reasonable that underage workers are not allowed to engage in it; But this is not absolute,

Suggestion: If there is nothing uncomfortable or uncomfortable, there is no need to care.

I hope I can help you.