[Longyuan Construction: wholly-owned Sun Company and Wanhua Materials sign two "Purchasing Framework contracts")-- according to the announcement of Longyuan Construction, Dadi Steel structure of wholly-owned Sun Company recently signed two "procurement framework contracts" with Wanhua Materials. According to the contract, Dadi Steel structure is the steel structure production and supplier of Wanhua material Yantai project and Ningbo project, with a total estimated contract amount of 1.074 billion yuan and 127 million yuan respectively.