The nozzle is widely used and has many functions. The nozzle is a consumer product, so it needs to be replaced during a period of use, so that it can make the work more efficient, and of course its life is very long. So how do you check when you buy it? How do you know that the nozzle you purchased is good?
1. Generally, when purchasing a batch number, you can check the nozzle top model is not customized.
2. can check whether the material of the nozzle is originally fixed.
3., you can compare the instructions with you, and you can check the difference between the instructions and the actual situation.
4. can allow the seller to test.
Nozzle detection is critical, so we must be very careful and careful.