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Companies have launched R and D department specifically performing researching the market work. Whether a small business is small or large it needs to know latest market statistics for deciding future business strategies. To gain competitive advantage, look for for hidden places to sale of products and retain customers can be important. There are some companies who've not gained success after research. The reason behind it can be improper way to do research. Following are normal barriers for small enterprises. One of the most common problems with hvac equipment is poor ventilation. This problem makes your hvac equipment work like inefficient outdated models which can waste plenty of your money. The two most common reasons behind poor venting: inadequate duct sizing as well as a dirty return air filter.