... vibrating source with a compact structure, light weight, low center of gravity, smooth operation and easy maintenance.2.Model S49-1 ... a big tension, smooth sieve surface, without any occurrence of relaxation.3.Model S49-2 is mounted with a buckled ... , grinding material, glass powder, refractory material.3.Food industry: sugar, salt, alkali, gourmet powder, starch, milk powder, bean milk, yeastsmust, ...