There is no so-called Five Principles of Lean Six Sigma. Lean six sigma is a combination of lean and six sigma. In fact, each has its own characteristics. Lean has five principles, as follows:

1. value: define the value from the customer's point of view. Value is a specific product (including service) that meets customers' needs at a specific price within a specific time.

2. Value flow: It can be explained by the famous saying of Taiichi Ono-paying attention to the operation time from receiving customer orders to collecting accounts from customers, thus eliminating the waste that cannot create value and shortening the operation time.

3. Mobility: Require value mobility, that is, reduce non-value-added activities and stagnation time.

4. Pull type: do what you need when you need it, and customer demand drives production.

5. Perfection: strive for perfection and continuous improvement.