jining yijian steel structure engineering co., ltd. jining yijian steel structure engineering co., ltd. was established on august 23, 2003. it is a national large-scale steel structure engineering construction enterprise. it is an enterprise with nine national a-level qualifications, including double-a qualifications for steel structure construction and design, first-level manufacturing qualifications, first-level manufacturing qualifications, curtain wall construction and design qualifications, double-a qualifications for decoration and design, second-level qualifications for doors and windows construction, and first-level qualifications for external contracting and labor export qualifications. the registered capital is 1.0158 million yuan. video,movie