1. customer complaints about the durability of the tool, the service life of the various parts that are relatively short.2. the customer is not confident in the operation of the tool.
1. Customer complaints about the durability of the tool. , The lifetime of the parts. Relatively short 2. Customers are not confident in the system of the engine.
1. Customer complaints about the durability of tools. , the lifetime of the spare parts at relatively short . 2. Customers have no confidence in the system of tool .