Zhoushan Liu Heng Town Door Machine Command Certificate can be registered in the training center or technical school specially designated by the Market Supervision Administration. The registration time is from late May to early June each year. The special equipment operator certificate was issued by the Bureau of Quality and Technical Supervision before, and now the Bureau of Quality and Technical Supervision and the Administration for Industry and Commerce are merged to be called the Market Supervision Bureau, so the special equipment operator certificate is issued by the Market Supervision Bureau.