Chongqing—Chongqing, one of China's largest industrial hubs, has stepped up its green manufacturing drive by recognizing 86 new eco-friendly factories and one industrial park for 2025. This is part of a broader push to cut emissions, boost efficiency, and build sustainable supply chains, local officials announced on September 11.
At Southwest Aluminum Precision Processing, a major supplier of aluminum alloy products for China's Long March rockets, Shenzhou spacecraft, and the C919 passenger jet, technical staff highlighted the role of innovation. "We focus on green technology," said Tang Yuting, a company engineer. "We have built a combined oil mist recovery and regeneration system for cold rolling mills, reducing volatile emissions while creating more than 2 million yuan ($280,000) in economic value annually."
Another example is Chuanwei Chemical, a subsidiary of Sinopec, which processes over 35,000 tons of waste sulfuric acid annually. The company built a recycling facility to recover and reuse the corrosive byproduct, achieving a recovery rate above 98 percent. "This has saved nearly 80 million yuan annually," said He Qiang, a company's methanol division manager.
According to the Chongqing Municipal Commission of Economy and Information Technology, Chongqing has established 395 municipal-level green factories, 33 green industrial parks, and 170 national-level green factories.
Beyond adopting clean technology, several companies are reshaping supply chains around greener products.
SERES's Shapingba branch was recognized for developing a green industrial chain around intelligent connected new energy vehicles. Its ecosystem now includes partners from other provinces supplying lightweight chassis, high-performance aluminum alloys, and seating systems, forming a full-scale industrial cluster in Chongqing.
The digital workshop will be held at SERES Phoenix Smart Factory in Shapingba District, Chongqing. (Photo/Sun Kaifang)
Chongqing Hi-Lex Cables Systems, a manufacturer of automotive control cables and components, has built an AI-based platform for product design. The system has cut electric drive product development cycles by more than 20 percent, while improving both R&D and production efficiency.
Other firms are focusing on reducing emissions through process innovation. Wansheng Fufa Glass, a national-level green factory, has installed a system that converts waste gases from glass production into electricity. The facility now covers nearly one-quarter of its power needs internally, while lowering carbon output.
Chongqing Jianfeng Chemical invested in nearly 30 green equipment upgrades, saving 31,800 tons of coal equivalent and reducing carbon dioxide emissions by around 100,000 tons.
Chongqing is turning to digital tools to drive its green transition. In 2024, the city launched the "Industrial Green Efficiency Code," a platform that tracks energy use and environmental performance across 1,000 companies and offers ratings, diagnostics, training, and green finance support.
The program has already delivered results: national-level green factories now make up nearly 30% of Chongqing's industrial output, 30 million yuan in green loans have been issued, 600,000 tons of coal equivalent have been saved, and nearly 1 million tons of CO₂ cut.
At the 2025 World Smart Industry Expo, officials rolled out "Industrial Green Efficiency Code 2.0," which links data, finance, industrial parks, and factories into a unified ecosystem. The upgrade will broaden evaluation, monitoring, and service functions across production chains.
"This is not just a platform but a key step toward building a green industrial ecosystem," a commission spokesperson said, adding that the system will serve as a central brain for cutting emissions, reducing pollution, and expanding sustainable growth.