Photo taken on May 5 shows that a batch of energy-saving rectifier transformers are tested before delivering to Japan and Bolivia at a local transformer manufacturing company in Luoyang city, Central China's Henan province. Over recent years, the company has prioritized the development of green and low-carbon technologies, resulting in industry-leading performance for its energy-saving transformers. Remarkably, the company's transformer exports surged by 50 percent year-on-year during the first four months of this year. (Text: Henan Daily Photo: Pan Bingyu)