... to drive and control the coke car Dalian yipin machinery manufacturing co.,ltd was estalished in 1997,and takes up land of 30000 ... ,welding quality system audited conforming to ISO3834-2 by IIW,manufacturing approval by DNV and LR,welding approval as grantable factory ... ,export sales is USD5,000,000.00. ISO9001 ISO3834-2 electric locomotive