HUIDA Ring die is widely used in feed, organic fertilizer, sawdust particles, particle hops, marigold particles etc. HUIDA Company produces a variety of high quality stainless steel aperture ring mold, wear-resistant alloy steel ring mold, is widely used in feed, organic fertilizer, sawdust particles, particle hops, marigold particles, forage grain and other Manufactures the basic model ring die: ...