A wireless station user is provided with a unified messaging protocol that enhances the currently available messaging capabilities of SMS. Each of the elongated handle bamboo layers has an average thickness of 1. , an alkyl group of 1 to 4 carbon atoms or an aryl group ; \u201ck\u201d is 1 or 2; \u201cm\u201d is 0 or 1; and \u201cm+k\u201d is 1 or 2), and further subjecting the resultant product to hydrosilylation reaction with a hydrosilylation agent. The zoom lens satisfies the following conditions:\u22121.