According to the shape of screening impurities to choose hole-shaped sieve plate(move out long, Diamond impurities) and the slit-shaped sieve plate(move out particles shape impurities and emplastic).

根据筛杂质特点可以择孔筛(、菱杂质)和缝筛(颗粒杂质和粘胶物)。

According to the shape of screening impurities to shoose hole-shaped sieve plate (move out long ,Diamond impurities)and the slit-shaped sieve plate (move out particles shape impurities and emplastic).

根据筛杂质特点可以择孔筛（、菱杂质）和缝筛（颗粒杂质和粘胶物）。