... road size:9#,11#,12#,20# Materials:Q235 Length:8,9,10 standard:ISO9001:2000 I-Beam 12# can be used for ... mine tram road size:9#,11#,12#,20# Materials:Q235Length:8,9, ... Construction development Company and Hong Kong Yizhou Company Ltd. In 1993. It has more than 2,000 employees including ... products of our company are the Light rail of 8-30 KGS/M, the heavy rail of 38- ...