China Aeronautical Project and Design Institute (CAPDI) had introduced a CAD software from Auto-trol Corporation in USA by the end of 1986.According to the work properties of CAPDI some application software packages

such as Mechanical Design

S7K Chinese Characters

Power Lighting

Architecture

HVAC etc.

have been developed in succession since 1986. So far the software packages have played an important role in these special design fields. It is necessary to redevelop this foreign CAD technology for our application to the non-standard equipment. During this process the common parts usually found in mechanical design have been concluded and summarised. By using the Application Interface (AI) of S7K supporting-software the Mechanical Design Software has been organically added into S7K

which contains the Standards of China Mechanical Design and Chinese Characters. Because these application softwares developed are used for professional jobs they are convenient to use and easy to learn. It not only greatly increases the working efficiency

but also powerfully ensures the design quality.