UMC has the in-house design capability to match the design needs of CT manufacturers and follow up on the whole system improvement throughout the process. In addition, from 2019 to 2021, the suppliers of X-ray bulb tubes among the top five suppliers of United Image Medical are Varex Imaging Group (Varex) and Philips Medical Systems Company (Philips). As a result, some of United Imaging's spherical tubes come from in-house production and some are sourced externally.