Dalian Best Environmental Engineering Equipment Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a national high-tech enterprise specializing in the research and development, design, manufacturing, and system integration of industrial environmental protection equipment. Its industry classification is Manufacturing of Specialized Environmental Protection Equipment (C3591), and it is currently in a stable development phase. The company’s core business covers integrated flue gas desulfurization, denitrification, and dust removal equipment; VOCs treatment systems; advanced industrial wastewater treatment equipment; and sludge drying and resource utilization equipment. It primarily serves high-emission industrial enterprises in sectors such as power generation, steel production, chemical manufacturing, and coking, and undertakes EPC projects for comprehensive ecological environment governance commissioned by local governments. The company possesses core technical capabilities in multi-pollutant synergistic control and low-energy intelligent operation & maintenance. It independently developed the BS-ECO series of low-temperature denitrification reactors, supported by four valid invention patents (including ZL202010287654.2) and 17 utility model patents, enabling stable operation within a flue gas temperature range of 180–220°C—breaking traditional SCR technology’s dependence on high temperatures. The company has obtained certification under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018; holds the “Special Equipment Production License” (GD2-level pressure piping component manufacturing) and Grade III qualification for environmental engineering professional contracting (D321123456); and was included in the Liaoning Province’s 2024 list of “Specialized, Refined, Distinctive, and Innovative” small and medium-sized enterprises (Liaoning Industry and Information Technology Commission Document No. [2024] 78). Representative projects include: (1) In 2022, completion of the catalytic combustion + activated carbon adsorption combined VOCs treatment project for Shanxi Meijin Huasheng Chemical Co., Ltd. (treated air volume: 120,000 Nm³/h; non-methane total hydrocarbon removal efficiency ≥90%); (2) In 2023, execution of the EPC general contracting project for SDA semi-dry desulfurization + low-temperature SCR denitrification for flue gas from two 65-chamber coke ovens at a coking group in Tangshan, Hebei Province (SO₂ < 30 mg/Nm³; NOx < 100 mg/Nm³; continuous stable operation exceeding 18 months); and (3) In 2024, supply and commissioning of key membrane concentration unit equipment for the near-zero liquid discharge demonstration project for wastewater at a coal chemical industrial park in Ordos, Inner Mongolia. Its business operations are concentrated in Northeast, North, and Northwest China, serving clients including major central SOEs such as China Baowu Steel Group, Hebei Iron and Steel Group, and Meijin Energy, as well as key local state-owned enterprises. Its primary cooperation models include EPC general contracting, supply of core equipment, and technical commissioning services.