■ "Smart Bee" tool and equipment management device, Japanese distributor of Shenzhen Danfu Technology Co., Ltd. ■ Sales of stainless steel, thin silicon electromagnetic steel sheets, and magnetic materials ■ Sales of polishing devices for injection needles, drilling processing devices, punching devices, polishing abrasives, and glass beads ■ Sales of cores for current sensors in EV vehicles, special transformer iron cores, and electromagnetic steel sheets