1. The used fire extinguisher must be sent to the maintenance unit with the fire extinguisher maintenance license to check the fire extinguisher and refill the fire extinguisher and drive gas.
2. The fire extinguisher, whether used or not, must be sent to the fire extinguisher maintenance unit for water pressure test when it exceeds the warranty limit of the factory.
3. The portable and trolley fire extinguishers of "1211, dry powder, carbon dioxide" shall be inspected for water pressure test every two years after the expiration of five years from the date of delivery.
4. "mechanical foam and water" portable and trolley fire extinguishers must be tested for water pressure every two years after the expiry of three years from the date of delivery.
5. "chemical foam, acid and alkali" portable and trolley fire extinguishers must be tested for water pressure every other year after two years from the date of delivery.