▎ 摘　　要

NOVELTY - A cation exchange resin comprises carbon material. USE - A cation exchange resin for production of high-purity ultrapure water. ADVANTAGE - The cation exchange resin has excellent economic efficiency and physical strength, excellent ion load-resin shape retention against repetition of a regeneration process, excellent stability in high temperature use, and less generation of eluate or decomposition product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of cation exchange resin.