The ETD-2000 type ion sputtering instrument has a stable atmosphere. It adopts vacuum automatic control and vacuum protection circuit to make operation and application safe and reliable. In order to expand the application field, the ionization current of the sputtering instrument can be adjusted manually or the vacuum micro adjusting needle valve can be adjusted manually, the pressure of the ionization chamber is changed, and the best effect of spray plating can be obtained. The unique vacuum rubber edge sealing structure ensures long term use will not cause the edge of the bell to affect the vacuum in the vacuum chamber, and the ceramic sealing high pressure plug is durable. It is easy to control the vacuum chamber pressure, ionization current and choose the required ionization gas when working in conjunction with the internal automatic control circuit, so as to achieve the best coating effect. Vacuum pump equipped with high quality