The project of "Technology of Control Cooling After Rolling, Performance Study and Engineering Application for Steel Plates with Variable Thickness under Longitudinal Loads (LP Plate)" jointly researched by Angang Steel Co., Ltd., Tsinghua University and Harbin Industrial University has recently passed identification of experts from Certifying Committee of China Steel Structure Association on the site of Heavy Plate Division of Bayuquan Branch of Angang Steel Co., Ltd. The experts agreed unanimously that the technology has filled a gap in the field of the country, reaching the international advanced level.