Changes from 2012 to 2017 91制片厂 Structures: The Highlights
91制片厂 Changes for 2017 Highlights of Impending 91制片厂 Changes聽 Include: Crude Petroleum and Natural Gas Extraction (2012 91制片厂 Code 211111) will be broken into two new codes in 2017. These codes will be 211120, Crude Petroleum Extraction and 211130, Natural Gas Extraction. Also, Natural Gas Liquid Extraction, (2012 91制片厂 Code 211112) will become 91制片厂 …