金属结构件及化工机械备件、配件，金属机械加工热处理等。
The metals structure piece and chemical engineering machine spare parts, accessories, the metals machine processes the hot processing etc…
不幸的是尽管中国制造的平头挺杆物美价廉，但是其冶金技术遭到质疑，加工、热处理、表面硬化质量也遭质疑。
Unfortunately, though flat tappets from China are cheap, their metallurgy is suspect-and the same goes for the quality of their machining, heat treatment and surface-hardening.
具有较强热处理及加工能力。
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