VietNamNet Bridge reported that Vietnam's four ingot steel producers, Dinh Vu, Van Loi, Hoa Phat Steel Corporations and Hung Yen Mechanical Joint Stock Company, have sent a petition to the ministries of finance, and industry and trade, asking for the import tax on ingot steel to be raised from 5% to 17%. They said that ingot steel output is expected to be abundant this year due to the decrease in domestic…