企业向现有顾客提供新的、与原有业务不相关的产品或服务，这一战略是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29328' and id < 2387568 and id<>'2387568' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29328' and id > 2387568 and id<>'2387568' order by id asc limit 5