In case there is a range of contractors coming into the company, all NAPA Nai ti responsible to inform you every time phanu. So that you will come and tell the operating regulations phanu and impact on the environment.
In the case of subcontractors to abide within the company responsible for informing you every time Panu Panu for you to come and work rules and assess their impact on the environment.
In the case of subcontractors in Phra sangkharat performance within the company to responsible to notify you light every time. for you speech announcement regulation performance and assess the impact on the environment.