A customer saw our x ray collimator NK103 on Facebook. He wanted to quote a price for this beam limiter. Generally, we would recommend it according to the customer’s requirements, but from a professional point of view, we would give reasonable suggestions or opinions to the customer. When we choose the beam limiter, we should also choose according to our needs and equipment. For our company’s three beam limiters have matching tube or X-ray machine, the choose the beam limiter depends on the size of the tube. For 125 KV tube, our NK103 and NK102 are suitable for customer needs. For 150 KV tube, our NK202 charity customer needs. Choose the beam limiter depends on the type of X-ray machine. For mobile X-ray machine, NK102 note is more suitable. For portable X-ray machine, NK103 beam limiter is more suitable.