water filter sponge Factory directly sell,low price,good quality, size,packing ,colour can according to your request. water filter sponge 1) Material: sponge2) Usage:used ... ,square,round,customers design shape are welcomed.Advantages:Factory directly sell,with high quality and competitive price,And we use environmental ... , 70% balance T/T against the copy of B/L. water filter sponge in Yiwu China