Mr. Xu is the purchaser of a door manufacturer. Recently, he has been very distressed because of the complaints from the previous subway project. After investigation, the reason is that after using the door sweeps for interior doors for a period of time, the hairs fall off due to long-term friction, and the loss of the sealing effect causes the air-conditioning to leak out, and it is also very unsightly. Now we have received a complaint from Party A and urgently need to change to a better supplier of door sweeps for interior doors. Mr. Xu found Aoqun through a friend's introduction.

Manager Wang of Aoqun received Mr. Xu. After understanding the situation, he inspected the door sweeps for interior doors samples brought by Mr. Xu on the spot. First, the pulling force is only 3kg. Insufficient pulling force will cause hair loss and depilation under long-term friction and stress. The brush wire for door sweeps for interior doors is made of PP material, which cannot rebound after sweeping and friction, and the deformation is serious. . In view of the above problems, the material can be solved by replacing it with a more flexible and resilient PA material; in terms of tension, the number of rows of hairs can be encrypted, and the gap between the base can be encrypted by pressing the base to increase the tension. Then I tested the existing door sweeps for interior doors of Aoqun in person, and the pulling force could reach 7kg. After that, Mr. Xu happily brought back the samples.

On the third day of bringing back the Aoqun door sweeps for interior doors sample, I received a call from Mr. Xu: “The sample leader is very satisfied. Now I have promised to replace the door sweeps for interior doors at one station first. If there is no problem, we will all All use Aoqun's." Then an order for 12,000 meters was placed.