It Adopts Natural Quartz Sand, Through Heating, And Is Characteristic Of Stable Chemical; Large Specific Area And Uneasily Contamination, Which Provides For Effective Breeding Environment.

• 它采用天然石英砂，通过加热，并特性稳定的化学;大具体领域和不易污染，其中规定，为有效繁殖环境。