Why are truck drivers more and more unhappy?

The material of brake drum and brake pad of domestic freight car is unqualified. Imported cars have short service life and high price, which is dozens of times that of domestic brake systems. When replacing the brake drum, many large trucks often choose the brake drum made in China. When the friction temperature is high, the brake pad and the brake drum will stick to slip, and spraying water to cool down will break the brake and the brake drum, resulting in a serious accident of sudden brake failure. So the big truck driver became more and more unhappy. I drove a foreign-made 20-ton Ford abroad, and the brake temperature was displayed on the steering wheel. When the brake pads reach the service life, there will be a prompt and an audible alarm on the dashboard. There has been no problem with the brake system for a long time, and the brake pads are always replaced with Ford original ones.