Disclosed is a data synchronization service for use in a peer-to-peer computing environment. In manufacturing this suspension, a platelike semi-finished suspension, which integrally includes a base portion, a beam portion, and a connecting portion connecting the base portion and the beam portion to each other, is first manufactured. At least one projecting pivot member extends from a side wall of the housing, wherein the end of the projecting pivot member serves as a pivot point in contact with a side wall of the pool to change the orientation of the apparatus with respect to the side wall of the pool.