Our co***ny was estabishde in 1994with the name of Donying haixin metal product Co,.Ltd.then,it was renamed into dongying zhengda metal product Co,.Ltd in 2001,At the very beginning ,we mainly do machining parts.with the development,the co***ny hase grown into an intergration of precision cating,machining ,metal surface treatment.
We specialize in casting and machining of stainless steel,carbon steel,alloy steeland nonferrous metal.there are fuour series,such as pipe fitting ,cnstrction hardware and mach...
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