嗯。

An experienced engineer of security printing with China’s Central Bank, I now would like to scale higher intellectual heights by pursuing Ph. D. studies in mechanical engineering at your university. I believe that my strong background in CAD has adequately prepared me to embark on this endeavor.
I have been working since 1996 for the People’s Bank of China, a Chinese version of the Federal Reserve, at its unique research institute of security printing, with the responsibility of designing the Chinese currency and the machinery to produce it. By engaging me in a variety of projects, the job afforded me ample exposure to cutting-edge developments in computer technologies, particularly in CAD software. I have, for example, recently redeveloped a purchased CAD (Computer Aided Design) software to make it more suitable for our own purposes. By adding our own part/subassembly to the database and make our own drawing criteria, we have achieved dramatically better efficiency.
My job performance

早，，，二二。。