- Name: Bach Mai Hospital
- Year of Construction: 2005
- Application: Hot & Cold water system
- Built in products: Kelen
- Place: Hanoi City, Vietnam
- Type of the building: Central Hospital
This is the biggest Central Hospital in the North of Vietnam. Kelen is using for the kidney filtration and emergency center of the hospital. Kelen fighting with 10 others pipes for this project, finally Kelen was chosen.