In May, I received an email from Mary, Kenya, saying that she needed to find a brush filter that would still work in the harsh environment of Africa. After the products ordered elsewhere arrived at the local area, the brush filter has been bent in less than one month, and the filtering effect is basically gone. There are constant customer complaints, and old customers’ orders are also decreasing. Ask if we can help them solve this problem.

Our sales engineer Oscar responded promptly within 1 minute of receiving the mail from Mary. I learned that the diameter of the sewage brush filter before was 150mm, but the skeleton was 1.6mm and the filament was 0.80mm. Oscar recommends the use of a 1.8mm stainless steel skeleton. Because the diameter of the filament is large, the weight will increase after the biofilm is wrapped. A more stable stainless-steel wire must be used to bear the weight of the biofilm. Mary is very satisfied with the Oscar professional advice, and paid for the usd100 sample customization fee, asking us to send the sample 5 days later. We sent samples after 3 days.

After 6 days, Mary received a sample of the sewage brush filter and tested the sample for the first time. After 25 days, it was found that the brush would not bend due to the weight increase after hanging the biofilm, and it still worked normally. Oscar was very happy and immediately gave us an order of 200 million pieces.