Customization service for circular stainless steel domestic water tanks, mainly made of 304 material (316L, 201 optional), the circular structure is suitable for limited spaces such as roofs, courtyards, corners, etc., and the capacity of 0.3-10 tons can be customized. The core adopts fully automatic welding or modular assembly technology, and functions such as automatic water replenishment, filtration, and heat preservation can be added according to needs.