[案情简介]原告:A建材公司被告:B建设工程有限公司A公司于2009年6月与某项目部(下称“C项目部”)签订钢材购销合同,并于2009年5月起向该项目部供应钢材,但双方钢材款项一直未结清。截止至2009年9月,该项目部尚欠原告巨额材料款。被告B公司与C项目部于2009年4月签订项目承包协议书,然实际施工过程中,该项目部虽由被告审定,但本案所涉工程全部转包杨某个人实际施工。后就钢材款纠纷,原告以加盖B公司C项目部印章的钢材购销合同、催款书为证据向法院提起民事诉讼,要求B公司支付货款、违约金并承担诉讼费用。 [Case Summary] Plaintiff: A Building Materials Company Defendant: B Construction Engineering Co., Ltd. Company A signed a steel purchase and sales contract with a project department (hereinafter referred to as “C Project Department”) in June 2009, and from May 2009 Supply of steel to the project department, but the two sides have not yet cleared the amount of steel. As of September 2009, the project department still owes a large amount of material to the plaintiff. The defendant Company B and C Project Department signed the project contract agreement in April 2009. However, during the actual construction, although the project department was examined and approved by the defendant, all the projects involved in this case were subcontracted to Yang’s actual construction. After the steel section disputes, the plaintiff to affix the B company C project department seal of the steel purchase and sales contracts, reminder book as evidence to the court for a civil lawsuit, requiring B company to pay the purchase price, liquidated damages and bear the litigation costs.