In accordance with the "Regulations on the Safety and Protection of Radioactive Isotopes and Radiation Devices" (State Council Decree No. 449) and the "Administrative Measures for Safety Permits of Radioactive Isotopes and Radiation Devices" (State Environmental Protection Administration Decree No. 31), Hangzhou Haohua Pressure Vessel Co., Ltd. submitted the application materials for the "Radiation Safety Permit" to the Provincial environmental protection department.