We, Master Automobile Co., are one of the leading auto diagnostic tools manufecturer in China. MST-1 universal scanner, MST300 code reader, MST 9000 ECU simulator and SC100 battery analyzor are invented by us and we have the patent. Moreover, we produce BMW GT1,  BMW OPS, MB Star, Volvo VCT2000, Caterpillar ET Scanner, most cables etc. Strong prfessional technical team are available to answer questions and solve problems for clients at anytime.