All kinds of nuts are fastened and should be added with pads and spring pads.

The switching contact of the secondary circuit funding switch should be accurate and reliable.

The middle line of the movement and the quiet contact should be divided, and the contact should be precise.

Polying and electrical lock measures should be accurate and reliable.

Tests and test pressure: Use debugging configuration, instrument, and instrument must be inspected by the state's recognition of the relevant units qualifications to be qualified.

The road monitoring rod's grounding system must be firm and reliable and meets the requirements of drawings and examples.

The insulation test of the electrical line must be qualified, the impedance room is appropriate, the wiring is accurate, and the logo is clear.