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Eccentric shaft exciter and eccentric block are adopted for adjusting the amplitude of vibrating screen with long material screening wires and more screening specification with the feature of reliable structures, strong excitation force, high screening efficiency, ruggedness, easy maintenance and safety in use, is applied to materials classifications for mine, building materials, thermal power plant and chemical sectors industries. There are woven screen, screening rubber slab and perforated screen plate structures of screen for choice.
