Summary in one sentence: Clean materials, low output, low frequency of screen replacement, limited budget, small on-site space, do not want complex maintenance, prioritize manual screen replacement. 1. Low procurement cost and highest cost-effectiveness For the same specifications, the price is generally only 1/3 to 1/5 of that of hydraulic screen changers and 1/5 to 1/10 of that of continuous screen changers. With low initial investment pressure, it is suitable for small factories, start-up pro