ACD-200 uses styrene-divinylbenzene copolymer as the framework, adopts advanced suspension polymerization process, and combines pore-forming agent technology to construct a stable macroporous network structure. Through subsequent chemical modification, high-density chelating groups (such as mercaptans, amino groups, etc.) are directionally introduced onto the framework to form functional sites with strong selectivity for precious metal ions, featuring both high specific surface area and excellent physical and chemical stability.

• High adsorption capacity: The macroporous structure accelerates mass transfer, and the chelating groups achieve a dynamic adsorption capacity of gold and silver ions of over 1.2mmol/g.
• Outstanding selectivity: The rejection rate for common interfering ions such as Cu²⁺ and Fe³⁺ exceeds 95%, significantly reducing the subsequent purification cost.