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Model:vacuum hardening fabrication service
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hardening fabrication
Customized high-frequency hardening technology working parts
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Model:high-frequency hardening
Dalian Hongsheng provide OEM hardening fabrication services machining parts
Dalian Hongsheng provide high quality CNC machining parts with hardening service
Model:hardening fabrication services
Customized hardening fabrication service machining parts
Precision customzied heat treatment fabrication parts in Dalian Hongsheng
Model:hardening
Precision high-frequency hardending fabrication services working components
Dalian Hongsheng provide high quality customized heat treatment fabrication parts
Model:high-frequency hardending
OEM made high-frequency hardening fabrication services machining parts
High quality heat treatment fabrication services provider in China
Model:high-frequency hardening