... , construction parts, valve/valve parts.stainless steel castings, steel investment castings, stainless steel gear boxes, 304, 316, CF8 ... , CF8M, CF4, CF4M, anti corrosion steel castings, lose wax casting, heatresistant castingNingbo ZeYang Machinery co.,Ltd ... Quality and in-time delivery, our products are exported to Canada, USA, and ...