On Dec 25 2004, 15 scientific achievements of LYC passed the provincial appraisal which was organized by scientific department of Henan province. The experts from scientific department appraised the 15 items seriously and all of the items passed the certification. Meanwhile, the experts highly appreciated LYC for its research capacity. It's reported that the 15 scientific items covered many field like military, machinery, medical, railway, automobile and iron industry; technologies of some items have reached international level, some other items filled a gap in China's related industries.