这个到底是怎么回事？是个政府部门，说只能提供这样的合同，一部分benefits不能给付，需要自己付。但是工资相应提高。这种合同是不是不好啊？万一以后想申请绿卡，有妨碍吗？哎，法盲阿

No idea either. Normally, the company in industry will hire agent company for contract employees.

I guess it's contract between individual and company, the company neither sponsor your status nor provide benefit. It may not what you want if you need H1 sponsor.