The market scale of China's air compressor industry are more than 8% growth increase, 2010--2011 even more than the 28% annual growth rate, market size expanding rapidly. However, the size of such a huge market compressor applications, over a long period of time from foreign control most of the market. In 2009, China's air compressor industry, a total of nearly 400 producers, including the number of domestic enterprises close to 90% of the total sales revenue of about $ 6 billion brand air compressor, 40% of the total industry; close to 10% foreign ownership The total sales revenue of about 90 billion yuan, accounting for 60% of the industry. Compressor noise control mainly silencers, acoustic and acoustic tunnel technical installations muffler main noise source is the intake and exhaust ports compressor should be used in an appropriate intake and exhaust muffler. Air compressor intake noise spectrum was low-frequency characteristics, intake silencer should be used in a structure or resistance, resistance-based impedance composite structures. Large compressor exhaust pressure, air flow rate is high, you should use the hole in the compressor discharge muffler opening. Set muffler muffler tunnel underground or semi-underground tunnel trenches standard air compressor, a tunnel wall brick with good sound absorption. The air compressor intake pipe and silencer tunnel connection, the air entering the compressor through the muffler tunnel. Silencer tunnel air compressor intake noise can be greatly reduced, and long service life than normal muffler. Standard air compressor, air compressor Shandong Hongda Xinxiang City Hongda environmental protection by energy saving equipment Limited. Xinxiang City Hongda energy saving equipment Limited (www.xxhdjnhb.com) strong, credible, in Xinxiang mortar industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead HTC into the brilliant green and you work for a better future!