Mr. Xie is a brand customer who does industrial doors and needs a large number of door hair brushes every year. Because Mr. Xie’s products are all used in Southeast Asia, in areas that are relatively humid and prone to seawater intrusion, the hair clip of the door hair brush is rusty. The stainless steel material is still the same. Mr. Xie will still receive some complaints from customers, thank you Mr. is very distressed about this.

After listening to the introduction of colleagues, I learned that Aoqun is a professional manufacturer of door hair brushes. Mr. Xie decided to visit Aoqun and seek a solution to the rust problem of door hair brushes. Mr. Aoqun Zhao received Mr. Xie. Through communication, he analyzed that the 304 stainless steel used by Mr. Xie’s door hair brush would have rust for two reasons:

1. The 304 stainless steel used now is not pure material, there are additives, so there will be rust;

2. Due to the special characteristics of the application area, there is seawater backflow, then higher grade stainless steel should be used. Mr. Aoqun Zhao suggested that Mr. Xie directly replace 316L stainless steel.

Aoqun just had a sample of 316L stainless steel door hair brush. Mr. Xie can take it to the customer for on-site testing. If there is no problem, use 316L stainless steel to produce. In the end, Mr. Xie took samples of 316L stainless steel door hair brush to test for rust.

Fifteen days later, Mr. Xie called and said, “I have tried the door hair brush sample provided to me by Aoqun and there is no rust. My previous door hair brush has been eroded by sea water for more than 10 days. It starts to rust, so it seems that 316L stainless steel can definitely meet my door hair brush requirements. Thank you for your professional advice, so that I can avoid detours. I will place a batch of orders first."