Mr. Zhang who sold the vase found us and asked us to make the carboy bottle brush's filament longer. After we learned the reason from Mr. Zhang, the carboy bottle brushes they had purchased could not clean the gap at the bottom edge of the bottle, so their carboy bottle brushes stocked for a long time and it was difficult to sell them.

After receiving the picture of the carboy bottle brush purchased by Mr. Zhang, we explained to Mr. Zhang that the bottom edge of the bottle could not be cleaned is due to the design of the carboy bottle brush head might not be correct. We recommended a unique carboy bottle brush for Mr. Zhang. Our carboy bottle brush head design is different from others on the market. Our head is shaped like 7, and the top bristle can better clean the gap of the bottle bottom. After obtaining the consent of Mr. Zhang, we customized a unique carboy bottle brush sample suitable for his vase size and sent it to him.

After receiving the samples, Mr. Zhang came back to us that they tested our sample and praised us for the special design of the rounded heads, which were more beautiful and better cleaning performance than the carboy bottle brushes they had purchased before. On the same day, Mr. Zhang purchased placed 1000 carboy bottle brushes to us. One month after Mr. Zhang received 1000 carboy bottle brushes, Mr. Zhang found us again. Their carboy bottle brushes were about to be sold out, which was better than the sales they expected. Therefore, he plans to purchase 5,000 carboy bottle brushes of different sizes.