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《gongyi zhengda environmental protection materials co., ltd. is an enterprise mainly engaged in activated carbon materials. its main products include powdered activated carbon, columnar activated carbon, powder activated carbon, coal-based granular activated carbon, fruit shell activated carbon, honeycomb activated carbon, etc., as well as filter materials such as activated alumina spheres, which are priced at a discount. welcome to inquire! K second-rate ×2304change skin color K loan