... , stability performance. B: Economy index is higher than small-sized factory. This series include:Model 70T,80T,100T,120T,160T ... has developed and manufactured the pneu-preussure roller mill, square sifter, self-vibrating sieve, horizontal wheat scourer, plane ... stability, stability performance. B: Economy index is higher than small-sized factory. If the flour extracting rate is similar, the quality ...