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Among those famous block magnets manufacturers, it is a professional supplier in China, welcome to wholesale magnetic blocks, neo magnets, magnet blocks, neodymium block magnets, square neodymium magnets from our factory.
Magnetic Blocks/ Neodymium Block Magnets 
Magnetic blocks are six-sided magnets with straight sides where all angles are right angles (90°). Opposite sides of the magnet blocks are parallel. They are shaped into block-type, like square, rectangular, cubic, bar, etc.
The neo magnets block are widely used in holding applications where they fit within a channel to increase their holding force in industry and actual daily life. GME own a selection of different shapes and sizes and can manufacture magnets according to customers' requirements.
Specification:
Size: L/W up to 300mm
Magnetized thickness up to 70mm
Grade up to N52, 38EH max.
Max. Working Temperature: 250 deg. C
Coating: Zn, Ni, NiCuNi, Gold, or Epoxy etc.
The Points you may interest:
http://www.gme-magnet.com/