In 2019, Anyang Railway Equipment Co., Ltd. provided DTVI2 railway rail fastener systems, P60 frozen rail joints, regular rail fishplates, P60 high-strength rail bolts with nuts, spring washers, P60 bulging rail fishplates, gauge insulating rods, fine gauge block, and height-adjusting pads under tie plates and height-adjusting pads under rails to Chongqing Metro Line 9.