... , SDS, SD, SK SF E, F, J, M, N, P, W, S.3.Material: Cast iron GG25/steel4.Surface treatment: Blank/phosphated ... /black finished CompanyTianjin Haorongshengye Electric Equipment Co.,Ltd.Contact personAnna WeiPhone86-15102249548Fax86-02227342567Websitehttp://www.tjhrsy.en.alibaba ...