This product is guaranteed for one year from the date of sale in accordance with the state's three-guarantee regulations on products.If the product fails and cannot be used normally, please try to deal with the problem according to the instructions and pl
The quality of the nozzle requires high precision in the manufacturing process, and the installation method also requires the correct method. If the cutting conditions need to be changed due to the poor quality of the nozzle, the nozzle should be replaced