Dongguan buys social security, Dongguan pays social security, and Dongguan handles social security.

If you are registered in Dongguan, you should be able to pay social security directly by Dongguan Social Security Bureau. If you don't find a reliable social security agency, how can you find it? Look carefully, there should be a lot, or look carefully at the avatar.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.