... magnet. 2, Isotropic magnets mainly used in colour TV, and Anisotropic magnet mainly used in the magnetic roller of laser ... , relay, sensor, air-conditioner. 3, Precise plastic part mainly used in field:Appliance (Camera, pickup camera), motor, hardware. 4, ... thin ring easily. Could be injection moulded with axis at one time, simplify assembling,ensure precision. Complex shape and precise tolerance ...