iron manhole covers and frames

Brand Name:	thyh

Qingdao Tian Hua Yi He Foundry Factory

[ shandong, China (Mainland)

Main Products:	We provides products made in both ferrous and non-ferrous alloys (cast iron, ductile iron, alloy iron, carbon steel, alloy steel, stainless steel, bronze, aluminium, etc. ) Our production methods include investment casting, lost foam casting, die casting, v-process casting, closed & open die forgin