The 3ML4772 vertical steel ball lapping machine, which was ordered again by French users, was successfully assembled on the production site. During the ordering process, the Foreign Trade Department and the Rolling Element Technology Department fully communicated with each other on the needs of users and adjusted and improved the equipment configuration. In terms of machinery, hydraulic pressure and external turntable are used. Users can flexibly adjust and match the turntable configuration according to the steel ball specifications and ball loading; In electrical aspect, Siemens Electric, PLC S7-1200, frequency converter G120 and TP Comfort smart panel are used to provide users with stable, high-precision and efficient product experience.