A micro-actuator, its manufacturing method, an optical pickup head of an optical recordingreproducing apparatus having the micro-actuator, and its manufacturing method are disclosed. The method includes: receiving a request message from a second CAB user; judging whether to notify a first CAB user according to the request message andor instruction information of the first CAB user; and sending the notification message to the first CAB user if determining to notify the first CAB user. The first housing section includes a vertical side wall, and a horizontal contact section extending from a top edge of the vertical side wall in a horizontal direction and having a folded section formed by folding a portion of the horizontal contact section to form the non-coated surface as a part of an upper surface of the horizontal contact section.