On February 11, 2023, the 40000 ton/year nylon 66 production plant of Tianchen Qixiang New Materials Co., Ltd.'s nylon new material project, provided by Yangzhou Huitong Technology Co., Ltd. with process packages, equipment, instruments, and DCS control systems, was successfully started and produced the first batch of high-quality products. The raw material adiponitrile used in this production line is produced by Tianchen Qixiang's first "bottleneck" technology butadiene method plant in China.