Due to water pipe line of cold water dispenser was broken at warehouse 4. I am not sure who was responsible. So I have to send e-mail to both of K. Thaworn and K. Kitinan. As I discuss with K. Thaworn, K. Thaworn inform me that must inform to K. Kitinan because team of K. Kitinan is the installer of water filter but the damaged thing is the water pipe.