The project quality control shall be implemented in accordance with GB/T19000-2000 standard, contract and technical agreement, design documents and enterprise quality standards. The project quality control adheres to the “high standards, strict requirements” and “planning, execution, inspection, processing” cycle work methods, and continuously improve process control. The project quality control is benchmarked. The first inspection, self-inspection, inspection, sampling inspection and general inspection are required during the construction process. The concealed project and key parts shall be notified to the owner's representative in advance for inspection.