30+ years. Serving automotive, electronics, and industrial manufacturers worldwide.

Vertically integrated - we own the mine.

Three sintered NdFeB series — pick by export risk, not just by grade.

Mainrich magnets, by application.

Four factories, all audited.

Radial multi-pole rings for smooth, compact robot joints.

Mainrich manufactures sintered NdFeB radial rings, hollow-cup motor magnets, laminated assemblies, and rotor magnet sets for humanoid joints, cobots, servo motors, and high-speed BLDC programs. Evaluate each program by the real engineering variables: geometry, waveform, tolerance, and traceability.

Grain boundary diffusion for high-temperature NdFeB magnets.

GBD puts dysprosium and terbium exactly where coercivity is decided: along the grain boundaries. That means SH and UH class thermal performance with far less heavy rare earth content and no unnecessary loss of magnetic strength.

Custom NdFeB magnets — from drawing to delivery.

Sintered NdFeB across three series — F (HREE-free, no MOFCOM needed), N (conventional), D (GBD, 50–90 % less Dy). Plus injection-molded and custom assemblies (Halbach arrays, radial multipole rings). IATF 16949 across four production facilities, backed by our parent group’s own rare-earth mining operations.