1. Six Sigma Research and Consulting: These institutions can help enterprises analyze their business processes and determine how to improve them to improve efficiency and quality. They can also provide a series of management consulting services, including strategic planning, organizational design and human resource management.

2. Six Sigma Training: These institutions usually provide six Sigma training courses at various levels, from basic introduction to professional certification. These courses are designed to provide employees with the skills and knowledge needed to implement and maintain the Six Sigma quality management system.

3. Six certificates of fitness for horses: These institutions can provide six certificates of fitness for horses for enterprises to prove that they have reached specific quality standards.

Generally speaking, the six management training institutions aim to help enterprises achieve efficient and high-quality production and service processes and provide employees with necessary skills and knowledge. Compared with other similar quality management methods, Six Sigma emphasizes identifying and eliminating defects through data-driven methods, and continuously improving business processes and quality level.