Mr. Cheng works as a purchasing manager for a large PSD manufacturer in Shenzhen. Recently he received a number of complaints about deformation of PSD strip brush manufacturers. For this problem, Mr. Cheng consulted with the brush suppliers for many times, but the result is not good. Mr. Cheng had to look for new brush suppliers.

After many inquiries, he learned that there is a factory specializing in brush in Guangzhou - AOQUN, he contacted AOQUN customer service. Customer service learned about the current situation of Mr. Cheng and asked Mr. Cheng to provide the door strip brush manufacturers, found the brush material is PP, then learned the problem and immediately gave a solution, change the original PP material to PA material. The reason is that PA has higher flexibility, better fluidity, stronger elasticity and abrasion resistance than PP. More importantly, PA has strong restoring force, and does not deform after 1 million times of back-forth friction. AOQUN has been focusing on making brushes for 11 years, and the PA products have passed the national ROHS certification, with guaranteed quality. Mr. Cheng asked to make a batch of samples to see the effect first.

Seven days later, Mr. Cheng received the samples, he contacted AOQUN customer service and said: "I was having a try, I did not expect AOQUN is so good at strip brush manufacturers, customers are praised highly. We will continue to cooperate with you and I will place the first order of 800 meters this time.