Is SF agent safe?

Very unreliable. Labor dispatch companies don't have to pay five insurances and one gold to their employees. If the company's efficiency is not good, they can lay off employees at any time, and the formal trade union will lose a lot of money. If you want to join SF Express and don't want to sign a labor contract with a third party, you can go to the recruitment area of SF Express official website. If there is no position, you can call and ask, but you really have to give up.