Breathable steel is widely used in plastic injection molding field, aimed at resolving the plastic injection or gas accumulation in the cavity during the process of metal casting problem, reduce defects in the parts forming, such as collapse or weld mark, improve the quality of the parts. Breathable steel has three series,3 microns,7 microns and 20 microns ,which shapes is square ,rods or customized according to customers requirements.

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