Specification: G10 / 2.5mm, G12 / 2.0mm, G14 / 1.7mm, G16 / 1.4mm, G18 / 1.2mm, G25 / 1.0mm, G40 / 0.7mm, G50 / 0.4mm, g80 / 0.3mm, G120 / 0.2mm
National standard steel sand production executive standard: we strictly follow the national standard “GB / t18838.3-2008 high carbon cast steel sh...
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