... machinery are similar, but only one is different,that is the ground sifter one, its sifter is ... sifter is set up on the upper of mill, that is to say, the stocks pass through the sifter, and ... the flour quality is same as or better than that got from large-sized flour factory. The steel ... twice, separated form rocks twice, washed with water, that guarantee the quality of the wheat before into mill. ...