... high purity, good fineness, low content of heavy metal Welcome to ChuZhou luxing ... . NCL Chemicals is certified to ISO9001:2000 Quality Management System & also ISO14001.For more information, please feel ... : Features: high purity, good fineness, low content of heavy metalGreatest Strengths of us:1.We have ... years.4. High purity, good fineness, low content of heavy metalCHEMICAL ANALYSISCao 75-90%Fe2o3 0 ...