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With the environmental crises and resource shortages resulting from rapid economic growth, energy conservation and emission reduction have become a new trend sweeping the world. Emerging countries such as India, China, and Brazil are making great efforts in this regard, and even developed countries like Norway, Luxembourg, and Germany are also striving to gain an advantage in the competition for a low-carbon economy. In Luxembourg, PRIMOREC SA, a company belonging to the ArcelorMittal group, collects and processes the waste residues and dust generated by the group’s four steel plants. This approach not only ensures zero emissions of pollutants, thereby preventing harm to public health and environmental contamination, but it also enables the extraction of pig iron and high-purity zinc using proprietary technologies, achieving both economic and environmental benefits. In Norway, BV Bio Diesel uses canola oil to produce biodiesel with a low ignition point. In 2007, the company’s production volume was 100,000 tons, and it is set to increase to 220,000 tons by early next year. Its products are supplied not only to traditional petrochemical gas stations but also, on a global scale, to gas stations operated independently from oil companies, offering customers biodiesel with 100% purity; such companies receive financial support in the form of exemption from income tax. In these two cases, one involves turning \"stones\" into \"gold\" and turning disadvantages into advantages, while the other involves developing renewable energy sources with low carbon emissions; behind their success lies an unwavering commitment to supporting energy conservation and emission reduction as well as promoting the development of a low-carbon economy. It is precisely because **strict environmental laws and standards for pollutant emissions have been established that steel-making waste gases, residues, and dust are not allowed to be released into the air or discarded arbitrarily.** On the other hand, **a series of regulations introduced to encourage the reuse of resources and the development of a circular economy have provided companies with reasons and motivation to pursue environmental protection.** **This combination of density and openness perfectly demonstrates the **specific role it plays in energy conservation and emission reduction. Also in Norway, **in collaboration with businesses, research institutions, and environmental organizations, the “Hydrogen Highway” project was launched in 2003; this project covers a distance of 580 kilometers from the capital Oslo to the port city of Bergen on the west coast. They plan to build 7 hydrogen refueling stations along the highways over a period of 6 years, with the energy for these stations to be supplied by renewable sources such as solar and biomass energy, as well as clean energy sources like natural gas and hydroelectric power; currently, two hydrogen refueling stations have already been put into operation. Norway’s next goal for hydrogen highways is to establish a hydrogen highway network in the Nordic region. While other countries are still debating whether to develop a hydrogen economy, Norway has taken the challenge of addressing climate change and finding renewable energy sources as an opportunity to promote and integrate the research, development, and industrialization of various high-tech technologies. It has also driven innovation in environmental policies and systems, thereby enhancing its national competitiveness – a move of great strategic significance, which can be regarded as the Apollo mission of the 21st century. In Germany, over a period of 8 years starting in 1991 and at a cost of 600 million marks, 3,600 square meters of photovoltaic panels were installed on the roof of the Federal Parliament building. A natural lighting system for the parliamentary hall, as well as a geothermal ventilation system for combined power generation and heat recovery, were also designed and installed. These measures helped to reduce the energy consumption and operating costs of the parliament building; the annual carbon dioxide emissions from the building’s equipment were reduced from 7,000 tons to as low as 400 tons. As a result, this historic building with a history of over 100 years became one of the most “green” buildings in Germany. The historical value of the Parliament Building, combined with its naturally ingenious ecological design, makes it one of Germany’s three major tourist attractions alongside Cologne Cathedral and Neuschwanstein Castle. It also serves as an excellent classroom for environmental education and a model for energy conservation and emission reduction. Nearly 10,000 visitors come here every day to experience the wonders of green, energy-efficient building design. While the first two cases illustrate that it is necessary to adopt a strategic perspective and use unique legislative and administrative powers to regulate social development and establish a framework and roadmap to guide humanity toward sustainable development, the latter two cases show that it is also important to implement green procurement in daily operations, take the lead in conserving energy and using renewable resources, and act as pioneers in energy conservation and emission reduction. In short, **we should be advocates and pioneers of sustainable development concepts and practices, taking the lead in moving toward a green ecological civilization.** If one cannot achieve energy conservation and emission reduction oneself, how can one then educate and encourage businesses and the general public to do so?