Australian customer purchased powder coating pre-galvanized steel square tube. After receiving the goods for the first time, the customer tested the adhesive strength between the powder and the surface. When initial adhesion was found to be small, we held meetings and conducted continuous testing. We refined the process by polishing the surface of the square tube and using a heating furnace. Through constant discussion and finding new ways, we achieved a final product the customer was very satisfied with. Now, the customer purchases a large number of products from our factory every month.