Foreign medical equipment customers commissioned a domestic trader, Mr. Zhu, to find a reliable test tube brush in laboratory.

Mr. Zhu learned that Aoqun is a professional manufacturer of test tube brush in laboratory. Mr. Zhu contacted Aoqun's sales staff. Through the introduction of the business, Mr. Zhu learned that Aoqun is the first in the industry to introduce the quality standards of test tube brush in laboratory. Aoqun attaches great importance to product quality and requires 5 filaments per test tube tensile force must be ≥3 kg. Only when the pulling force is good enough can the test tube brush in laboratory 's cleaning needs be met, and the filament cannot be losen. Later, at the request of Mr. Zhu, Aoqun sent test tube brush in laboratory samples to him.

Seven days later, Aoqun received a call from Mr. Zhu to order the product. He said that after receiving the sample, he compared it with the previous product and performed a pull test. The anti-pull effect of Aoqun test tube brush in laboratory is very obvious. Although the price is higher than others, it is the most desirable compared with the products of many test tube brush in laboratory. After obtaining approval from foreign customers, Mr. Zhu directly placed an order for 500 sets of test tube brush in laboratory.