Qingdao Dongdong Ship Accessories Factory was established in 1994 and our head office located in Qingdao city. Our main products are sacrificial anode, including Zn sacrificial anode, Al sacrificial anode, Mg sacrificial anode, Zn sacrificial anode rod, Al sacrificial anode rod, etc. We can produce various grades casting copper pieces, various grades alloy aluminum pieces, and all kinds of non-ferrous casting according to the drawing or sample. The ...