上期介绍了即将于１９９９年４月１日实施的石油化工行业标准《石油炼制催化剂分类》（ＳＨ／Ｔ０６６６－１９９８）的上半部分，即石油炼制催化剂的品种代号。本期介绍下半部分，主要是工业上已经应用的石油炼制催化剂的新旧代号对照及催化剂的生产单位和提供技术单位（表１ The last part introduced the first half of the petrochemical industry standard “Petroleum Refining Catalyst Classification” (SH / T0666-1998) to be implemented on April 1, 1999, namely, the code for the petroleum refining catalyst. The second half of the current section introduces the old and new references of petroleum refining catalysts that have been used in industry and the production units and technical units that provide the catalysts (Table 1