Mr. Xu is a purchase from a roll-up door manufacturer in Shenyang. Recently, he has been very troubled by receiving complaints from previous project parties. The reason for the investigation is that after using the weatherstrip brush roll up door for a period of time, due to long-term friction, the filament fall off, the sealing effect is lost, and it is also very unsightly.

Mr. Wang of Aoqun received Mr. Xu. After understanding the situation, the weatherstrip brush roll up door samples brought by Mr. Xu were tested on site. First of all, the pulling force is only 3kg. Insufficient pulling force will cause filament loss and depilation under long-term friction and stress. The material of the brush wire is PP, which cannot be rebounded after sweeping and friction, and the deformation is serious. To solve the above problems, the material can be solved by replacing it with a PA material with more flexibility and more resilience; the amount of filament removal can be encrypted in the pulling force, and the gap between the brush filaments in the base can be compressed to increase the pulling force. Then I also tested the existing weatherstrip brush roll up door of Aoqun in person, and the pulling force can reach 7kg. After that, Mr. Xu was happy to bring back the samples.

On the 3rd day of bringing back the Aoqun weatherstrip brush roll up door sample, Aoqun received a call from Mr. Xu: "The sample leader is very satisfied. If there is no problem, I will use the Aoqun weatherstrip brush roll up door."