What is the 'three simultaneous' system?

According to Article 41 of the Environmental Protection Law of the People's Republic of China, "three simultaneities" refer to the fact that pollution prevention and control facilities in construction projects should be designed, constructed, and put into operation simultaneously with the main project. The facilities for pollution prevention and control shall comply with the requirements of the approved environmental impact assessment documents and shall not be dismantled or left idle without authorization.

What are the behaviors that violate the "three simultaneities" system?

What are the illegal behaviors of "submitting without verification" in the "three simultaneous" system?

Article 23 of the Regulations on the Management of Environmental Protection for Construction Projects: If a construction project is put into production or use without the completion, acceptance or unqualified acceptance of environmental protection facilities that need to be built in accordance with the provisions of this Regulation, or if false information is fabricated during the acceptance of environmental protection facilities, the environmental protection administrative department at or above the county level shall order it to make corrections within a prescribed time limit and impose a fine of not less than 200000 yuan but not more than 1 million yuan; Those who fail to make corrections within the prescribed time limit shall be fined not less than 1 million yuan but not more than 2 million yuan; Impose a fine of no less than 50000 yuan and no more than 200000 yuan on the directly responsible supervisors and other responsible personnel; Those who cause significant environmental pollution or ecological damage shall be ordered to stop production or use, or shall be ordered to close down with the approval of the competent people's government.