laizhou Guangda precise instrument co., ltd reviews
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we are professional manufacturer producing hardness testers and metallographic sample preparation machines in China for more than 10 year histories. Our hardness testers include Bench type Rockwell series, bench type Brinell series, bench type Vickers series, portalbe Leeb series and shore series. Our metallographic sample preparation machines include polishing series, grinding series, cutting series and mounting presses.
