Khan long hin
Khan long hin (, ), or stone-polished bronze bowls, are a type of traditional Thai handicraft. The Ban Bu neighbourhood in Bangkok is the last place in the world that makes "khan long hin". These bronze bowls were historically used to hold lustral water in religious ceremonies, and were a luxury item used only by aristocrats. Handmade through a laborious process, today they are valued by collectors, and are regarded as a 5-star OTOP (One Tambon One Product) item. Story of Khan long hin was started since in Ayutthaya era, when Autthaya was the old capital city  of Thailand. After capital change from Ayutthaya to Rattanakosin, Khan long hin was moved to Rattanakosin too. At that time, there are many houses in Baan Bu community make Khan long hin. But today, there is only one house in village that makes Khan long hin. Process. There are 6 processes to make Khan long hin