The clay-grains have features as follows:

The clay-grains from our factory are produced under high calcining temperature.So they can't be resolved in water and are nevertheless germ-free,therefore don't change the quality of water.

Furthermore,there're a lot of holes on the surface of a grain,so they are of adsorption and can purify the water in the pool or aquarium,as well as fit for the growing of water-plants.

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© 2004 Zhejiang Yunfeng Garten GmbH