Hardness guarantee: Only self heat treatment can be played to the best tool, highlighting the soul of knives, and heat treatment is the company's fields of expertise, in order to ensure the stability of quality.
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hardness guarantee
硬度保证
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Bolting mechanical properties are tested by the tensile strength tester, impact tester and hardness testers, to guarantee the detect precision.
连接副机械性能检测，采用微机控制的拉力机、冲击试验机及各种硬度计以保证测试精度。
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