Huang Gong is an engineer from a manufacturer of dock levelers. During this period, the brush seals for dock levelers used to seal and block dust under the door were too hard, which not only scratched the floor, but also increased the resistance, making the dock levelers very difficult to operate. It went smoothly, so Huang Gong always tried to solve it. By chance, I learned and consulted Aoqun through searching.

After learning about the situation, Aoqun’s business manager Wang contacted Huang Gong, and after further understanding Huang Gong’s requirements, he suggested: "The hardness of brush seals for dock levelers can be adjusted by changing the diameter of the brush. Yes, the smaller it is, the softer it is. Aoqun is currently able to achieve each φ0.08mm level.” Later, according to Huanggong’s specifications, samples were sent for testing within 3 days.

After receiving samples of brush seals for dock levelers from Aoqun, Huang Gong immediately carried out a detailed test and received feedback on the same day: "The test results are very satisfactory, the brush filaments are soft and comfortable, and they are almost comparable to beauty brushes on the US market; The operation of dock levelers is also very smooth and there is no resistance. Thanks to Aoqun for helping to solve the problem, and hope to achieve a long-term cooperative relationship in the future."