CNOOC Huahe Coal Chemical Ltd. is a large state-owned joint venture chemical enterprise jointly established by China National Offshore Oil Corporation Limited and China Huaneng Group Co., Ltd. It is designated as a key national project supporting energy security and fertilizer supply assurance, serving as an important nitrogen fertilizer production base in Northeast China and a national fertilizer reserve storage unit. The company focuses on the coordinated development of modern coal chemical industry and green agricultural chemicals, with core businesses covering research, production, and sales of ammonia, urea, compound fertilizer, liquid carbon dioxide, and industrial-grade methanol; its products are widely applied in agricultural production, industrial gases, environmental denitrification, and food preservation. Leveraging high-quality lignite resources in Hegang City, the company has constructed large-scale facilities with annual production capacities of 1.32 million tons of ammonia, 2.2 million tons of urea, and 400,000 tons of compound fertilizer. Its core processes adopt advanced technologies including Lurgi low-pressure ammonia synthesis, Snamprogetti CO₂ stripping urea production, and aerospace gasifier-based coal gasification (MDEA decarbonization + low-temperature methanol washing), endowing it with core capabilities such as strong adaptability to various coal types, high carbon conversion efficiency, and energy consumption below the industry average. The company holds 12 invention patents and 38 utility model patents, and has participated in formulating national and industry standards including “GB/T 2440—2017 Urea” and “HG/T 4850—2015 Compound Fertilizer (Compound Fertilizer).” It has obtained ISO 9001, ISO 14001, and ISO 45001 system certifications, and holds permits for safe production of hazardous chemicals, pollutant discharge, and nationwide industrial product production (fertilizer category); it has been recognized as a national high-tech enterprise and a Heilongjiang Province “specialized, refined, distinctive, and innovative” SME. For ten consecutive years, the company has undertaken national commercial fertilizer reserve tasks, supplying over 4 million tons of agricultural urea to major grain-producing provinces—including Heilongjiang, Jilin, Liaoning, and Inner Mongolia—from 2022 to 2024. In 2023, it commissioned a 400,000-ton-per-year intelligent production line for premium compound fertilizer; in 2024, it launched the demonstration project for low-carbon “ammonia–hydrogen” coupling. Its service scope concentrates on the three northeastern provinces and parts of North China’s major agricultural production areas, providing stable and reliable product supply, customized compound fertilizer solutions, and collaborative support for low-carbon technological upgrades in coal chemical projects to agricultural service providers, industrial gas users, environmental governance enterprises, and green, low-carbon technology partners.