The ultra-fine pulverizer improved for baby animal feed and aquafeed processing. Features: High capacity Optimal working chamber profile, increased pulverizing zone and reduced useless power consumption. Excellent performance Pitched blades grading system, excellent grading performance at a low speed; aspiration conveying, low temperature without nutrient degradation; no sieve furnished, avoiding over-grinding. Ease maintenance Hydraulic device for grinding chamber opening, ease of maintenance.