1. Rely on the secondary inspection to reduce the proportion of bad outflow <br>2. Add a filter to the washing tank after chemical nickel to filter the water in the washing tank circularly and improve the water quality
1. Rely on secondary inspection to reduce the proportion of defective outflow<br>2. A filter is added to the water washing tank after chemical nickel to circulate and filter the water in the water washing tank to improve the water quality
1. Rely on secondary inspection to reduce the proportion of bad outflow. 2. Add a filter to the washing tank after chemical nickel, and circularly filter the water in the washing tank to improve the water quality.