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Oral and topical delivery systems. It can be used as skeleton material for slow and controlled release preparation. High viscosity, high suspension capacity, short rheological property, suitable for concentrated gels, emulsions and suspensions. For the oral route, it is suggested to substitute Carbopol® 974P NF Polymer with polymeric solvent (ethyl acetate) for Carbopol® 934P NF Polymer for the research and development of new products.