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).

• 根据筛选杂质的形状特点可以选择孔形筛板(去长、菱形杂质)和缝形筛板(去颗粒形杂质和粘胶物)。