Singapore sp just got pr monthly salary of 2000. How long does it take to apply for pr for your spouse?

According to your self-report, you just got the PR from China and plan to apply for PR for your wife. Your wife is not in China and does not meet the requirements for applying for PR. So the procedure you have to go is to apply for a family residence visa for your wife, depending on the validity period of the immigration bureau or passport.

Because your income is low, you can ask your wife to find a suitable job after she arrives in China, so as to strengthen her economic background for applying for PR in the future. Generally, after six months, you can submit your application. Success depends on our country's immigration bureau.