foreign key
3.Contents of this course include B.O.P accounts &adjustment, exchange determination, macroeconomic policies in open economies, international monetary system overview, foreign exchange market &exchange system of Taiwan, foreign exchange transaction, key documents for financing international trade (bill of exchange draft &letter of credit), international financial market, foreign exchange risk management, exchange accounting and exchange regulations.
6.Abstract: Ultrasonic welding for ribbon is widely used in developed countries,electric resistance welding is still used in China.On absorbing foreign advanced technology,the key assembly of the ultrasonic welding machine i.e. pneumatic working platform was manufatured.The cost of the machine and its spare parts is only 1/3 of the imports .The machine has been operated in a factory for four years,and has been proved stable and reliable.The machine can substitute the imports.

