What are big bags and small bags?

1, big bags and small bags are generally just popular expressions in society, meaning general contracting and subcontracting.

2. Generally, there is a legal basis, and it is not subcontracted casually. For example, in the construction industry, the general contractor contracted a project, such as a teaching building. According to the law, the general contractor has contracted the civil part of the building to Party A and the installation part to Party B, among which Party A and Party B belong to subcontractors, which is commonly called small packages. The general contractor is also a big bag.