Some time ago, Mr. Cory from the United States sent us an inquiry. He said that their company is producing portable water bags. He needs us to customize the suitable bottle brush flexible for their portable water bags. Mr. Cory sent us a picture of their portable water bag.

We asked Mr. Cory to send us his portable water bag as a sample so that we could analyze the water bag more directly and customize the bottle brush flexible that fits the size and type of Mr. Cory's portable water bag. After receiving the portable water bag, we found that the general brush head could not wash the bottom of the water bag. We recommended the bottle brush flexible with tied head. The bottle brush flexible can go inside the flat bottom of the water bag which can play a very good cleaning role. We sent the bottle brush flexible as a sample to Mr. Cory.

After receiving the sample, Mr. Cory was tested and cleaned, and he was very satisfied with the recommended bottle brush flexible. He said that the bottle brush flexible can thoroughly clean the bottom of his water bag. He is very satisfied.