Diagnostic tool refers to handheld auto diagnostic tool. These auto diagnostic tools are with screen to display obtained information. Include diagnostic trouble code, freeze frame, real time data, battery data, vehicle information, I/M readiness etc. These automotive diagnostic tools are with cable to connect with the vehicle. They are plug and play and no need to use with external display device and App. They are compatible with OBD-II vehicles, no matter gasoline or diesel vehicles. Some of them are workable with both commercial and passenger vehicles. Some of these auto diagnostic tools are with one-click quick query function, such as VIN, DTC and BAT. User just need to press the key on the automobile diagnostic tool to start diagnosis. Fiberall provide OEM, ODM and R&D service for these auto diagnostic tools. Please feel free to contact us to negotiate if you have customized requirement for them.