5S is the name of a method of managing and organizing workplaces. It stands for 5 words in Japanese including: Seiri (lọc Screening), Seiton (整頓 Sort), Seiso (清掃 Clean), Seiketsu (清潔 Caring), and Shitsuke (躾 Ready).

Screening: Seiri or Screening means sorting, organizing items in order. This is the first step businesses need to do in 5S practice. The main content of S1 is to sort and remove unnecessary things that can be sold or reused.
Arrangement: After removing unnecessary items, the next task is to organize the remaining items effectively according to easy-to-find criteria, easy to see, easy to retrieve and easy to return.
Clean: Regularly clean, maintain a clean workplace through overall sanitation and organize daily cleaning of appliances and work areas. S3 aims to improve the working environment, minimize risks and accidents while improving the accuracy of machinery (due to the impact of dirt).
Care: Always check and maintain 3S above. By developing S4, 3S activities will be improved gradually based on the standards set and proceeding to perfect 5S in the enterprise.
Ready: Means to train, create a habit, order and style for people in implementing 5S.
5S was developed by some places to become 6S. S Friday is Safety, but if you do it properly, 5S includes safety for employees. However, in some Japanese companies, 5S is reduced to 3S (first 3S) because everyone is willing to do 3S and always be aware of and discipline well.