Mr. Zhong is the purchasing manager of a company that produces glass test tube bottles. Some time ago, he called Aoqun Xiaozhou, saying that the glass test tube bottles produced by his company needed to be equipped with a round bottom flask cleaning brush. He also asked several suppliers to send samples, but they were not suitable. About Xiao Zhou took the time to bring the model to his company to discuss cooperation matters.

The next morning, Xiao Zhou brought a model to visit Mr. Zhong and introduced him in detail to the round bottom flask cleaning brush produced by Aoqun. The filament of this product is made of new PA material. The brush has good elasticity, smooth color and uniform thickness. The skeleton material is made of stainless-steel wire to ensure that it is durable and not rusted. Quality control, to ensure that each batch of products can pass the shipment. Later, Mr. Zhong placed 200 orders for testing.

Twenty days later, Mr. Zhong gave feedback to Xiaozhou: "The round bottom flask cleaning brush produced by your company is really good. It has been tested by our technical department and meets the requirements of use. I am happy to cooperate with your Aoqun company for a long time." Mr. Zhong added another order.