YI CHANG MACHINERY CO,. LTD. ,THE FAMOUSE DRILL AND TAP MACHINE MANUFACTURER ,WAS FOUNDED IN 1984, AND IS THE FIRST PROFESSIONAL MANUFACTURER FOR AUTO-FEEDING DRILL MACHINE(GEAR-CLUTCH TYPE).     IN THE PAST 20 YEARS AND THE TIME AFTER, YI CHANG WOULD ALWAYS KEEP OUR INTERESTING OF INOVATION TO SEARCH THE LARGEST PROFIT FOR OUR CUSTOMERS , SO ,THE AIR-HYDRAULIC AUTO FEEDING MACHINE(WIN THE TAIWAN LOCAL PATENT) AND GEAR-ADJUSTED AUTO TAP MACHINE(WIN BOTH CHINA AND TAIWAN PATEN) WILL NOT BE THE END.NEW THINGS ARE GOING TO HAPPEN!