Independent designed appearances:ZL200730114488.1: control panel (1); ZL200730114489.6:control panel (2); ZL200730114490.9 control panel(3); ZL200730114491.3 control panel(4); ZL200730114492.8 control panel, and so on. Twenty-seven designs above are approved by SIPO, gained design patent and have obtained patent protection of SIPO, thus the interests of our company can be protected to the maximum extent.