A method for generating a BPEL4WS executable workflow code from an unstructured cyclic business process model. The connectivity agreements may be established through user-side negotiations or third party negotiations for a connection with an access network. Advantageously, the laser pseudo-etching creates bands or indicia that substantially preserve or retain some or all of the desirable bulk properties of the hard carbon coating, for example, the corrosion resistance. Therefore, a low-priced light-emitting device capable of displaying a bright image can be obtained.