It is mainly used to test the hardness of small precision parts, the hardness of the surface hardened layer and the hardness of the effective hardened layer.
Qingdao Sinyundy Industrial Co., Ltd. is located in the beautiful coastal city of Qingdao, founded in 2020, the company specializes in the production of automotive fasteners, after more than 20 years of development, became one production, research and development, sales integration of standard parts enterprises.
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