Patented item: Air compressor inlet filter Patent holder: China National Bluestar Harbin Petrochemical Corp Patent No.: ZL 2010 2 0594695.8 Description This was an improvement over the earlier inlet filter, with a housed filter that can be fixed on the operating platform and a larger size that increases the filtration area of the fan and reduces the difference in air pressure.

I. Development guides II. Development orientation III. Planning objectives IV. Managing technology