The basis concerns a provision, the case with construction project invalid subcontracting includes:
1, construction unit perhaps has business charter without business charter but the qualification that develops without estate, so the contract that unit of the others construction signs is invalid;
2, construction unit did not deal with land card, construction to use permit of program of project of ground program licence, construction with respect to experience proposal project, so the contract that construction unit and construction unit sign is invalid;
3, construction unit gives the construction unit that does not have corresponding aptitude construction project hair package, signs contract is invalid.
