There are many types of beam limiters. There are configuration limiters for 125KV and x ray collimator for 150KV bulbs. For X-ray machines, they are suitable for portable X-ray machines or mobile X-type machines. A x ray collimator for a light machine or a stationary X-ray machine.
The x ray collimator for mobile X-ray machines is typically 125KV for 125KV bulbs. The x ray collimator for mobile X-ray machines is a small and medium-sized x ray collimator in the beam limiter.
The mobile X-ray machine is a mobile X-ray machine. The advantage of the mobile X-ray machine is that it is small in size, has a mobile device, and can be moved at any position. It is suitable for many occasions, not limited to one place. This is a fixed type X. The beam limiter used in mobile X-ray machines lacks the same features.
Mobility also requires that the size of the mobile X-ray machine is smaller and the weight is smaller, so the x ray collimator of the mobile X-ray machine is smaller than the volume limiter used by the fixed X-ray machine.