There are various kinds of power tools developed in recent two years with differnct functions and features, which were paid attention by different clients  Generally speaking, for the common power tool, eg,  electric drill, impact drill, angle grinder and small power rotary hammer, they are the strenth for many Chinese manufactures because of the obvious low cost comparied with other big power products.  But for the  big power rotary hammer, angle grinder, planer, cut off saw & diamond dirll are more attractive for the big brands in America, Germany or Japan.