In 2017, the series of pre-buried channel products were further improved, and the level of specialized process manufacturing was greatly improved, forming an industrialized production capacity and achieving brilliant results. All kinds of pre-buried channels are supplied to Shanghai Metro Lines 15 and 18, Wuhu Metro Line 1, Line 2, Shenzhen Metro Line 9, Taiyuan Metro Line 2 and other large and medium-sized cities, with annual sales of more than 8,000. Ten thousand yuan, product quality and service quality have been well received by users. At the end of 2017, he was selected as a Shaoxing subway. In January 2018, he was shortlisted for the Beijing Subway.