In the market brand Coasts is one of the most durable sand filter, can provide the best performance and cost efficiency for the users, this sand filter use high quality colophony and glass fibers and the surface is twisted by the soaked resin glass fibers, so that have good strength resistance and corrosion resisting. The internal filter and valve is convenient for the users to observe and operate( have the top and side type).It is widely used in swimming pools, the garden pool, massage pool...