Which is the best after-sales management software for home appliances?

My home is used by Sifang Technology's Sifang ERP management system, the system interface is very new, the operation of the function at a glance, the whole process is very clear, on the work order, engineers, spare parts, settlement can be real-time online management, voice and incoming pop-ups, shopping guide, managers APP, master APP, information staff, spare parts staff, the operation of the mobile terminal, the engineers can be attendance, location, wages can be directly viewed through the system, spare parts with how much, how much is left, which is running out, there are records, reminders, and the system can be used by the engineers, the engineers, spare parts and spare parts. The system can be viewed directly, how many spare parts used, how much is left, which will be used up soon, there are records, reminders. Very good use.