Environmental protection warning graphic signs should be set at the discharge port (source) or hazardous waste storage (disposal) place where toxic, carcinogenic and substances that are seriously harmful to human body are discharged, and vertical or plane fixed signs should be selected according to the specific situation on site. Eighth local environmental protection departments at all levels and their environmental supervision institutions are responsible for organizing the implementation of the setting, installation, supervision and management of environmental protection graphic signs. Article 9 After the installation of environmental protection graphic signs, no unit or individual may dismantle, move or alter them. Tenth the use, maintenance and management of environmental protection graphic signs must establish a registration system. The State Environmental Protection Bureau issued a unified and standardized sewage outlet sign registration certificate. The registration certificate is the original record of the sewage outlet supervision and management files. Local environmental protection departments at all levels, their environmental supervision institutions and pollutant discharge units must fill in the registration certificate at the same time as required. Article 11 When the position of the sewage outlet and the types of pollutants change, the pollutant discharging unit that uses the graphic signs of environmental protection shall report to the local environmental protection department in time, and change the corresponding contents of the signs and registration certificates after approval. Twelfth environmental protection graphic signs of daily maintenance by the user. Environmental protection graphic signs must be kept clear and complete. Users must check it frequently, and repair or replace it in time if they find that the appearance is damaged, the color is polluted, or there are changes, fading and other conditions that do not meet the standard requirements. Thirteenth environmental protection departments at all levels and their environmental supervision institutions should take the inspection of environmental protection graphic signs as an important part of daily on-site supervision and management, and organize a comprehensive inspection at least once a year. Fourteenth in violation of the provisions of Article ninth and Article twelfth of these rules, according to the relevant provisions of environmental laws and regulations on the supervision and management of pollution prevention and control facilities, will be punished. Fifteenth environmental protection graphic signs, registration certificate production, installation and maintenance costs, should be paid by the sewage units; If it is really difficult, it can be subsidized from the pollution control subsidy fund (or fund loan) according to the current policy of using sewage charges. Article 16 These Rules shall be implemented as of July 6, 1996.