Special equipment certificate has no expiration date?

Special equipment certificate of conformity is one of the lifelong follow the information of the equipment, special equipment installed after the acceptance of the local special equipment inspection department inspection, and later, according to different equipment have different periodic inspection period, to the year to apply for periodic inspection. But the certificate of conformity of the equipment should be retained, because it is one of the equipment factory to save information. Security checks are sometimes used.

Type test certificate, is the manufacturer of a newly developed type of equipment, the reliability of this type of equipment for the test, this certificate of conformity is to show that it is this type of all the equipment through the test, and qualified, in each piece of equipment factory are not all type test, only that the manufacturer of this type of design qualified. Now the new factory equipment must have a quality inspection department issued by the supervision and inspection certificate, with the equipment is a lifelong documents, such as human identity cards. It is more important than the certificate of conformity of the equipment. Without this certificate belongs to the private factory equipment. Certificate of conformity manufacturers can be issued at random, but the supervision and inspection certificate is the only legal identification of equipment.