The second category is the various key components that make up the system. After working in foreign companies for so many years, I found that there are few excellent parts manufacturers in China that are comparable to European and American companies. Businesses sell foreign advanced components to all corners of China, and to upstream OEMs around foreign manufacturers, especially for those first-class enterprises that sell to domestic first-class enterprises after finding domestic OEMs to produce OEM , our hard work has contributed most of the value to the "channel".