Represents different brands. Alibaba's bull head logo represents high-quality merchants, also called the "1688 Powerful Merchant" logo. The difference between the black bull head and the red bull head lies in the different brands and properties they represent.
1. The red bull head represents the source factory and has a business license and small brands with production licenses.
2. The black bull head represents a big industrial brand, a big brand with a business license and production license.