Suzhou ding lian rubber produce co . , ltd located in suzhou wuzhong exports of sujiahang expressway . ding lian is a company specializing in the production of various types of industrial rubber roller and rail roller modern enterprise 苏州鼎联橡胶制品有限公司,地处吴中经济开发区东吴工业园，位于苏州苏嘉杭高速吴中出口处,是一家专业生产各式工业用橡胶辊、砂光轮、印刷轮的现代化企业。
Limitations are unavoidable in any study . there are five potential limitations , namely " halo effect " , " logical error " , " lack of assessment tool for intervention skills " , " limitation of immediate supervisors judgement " and " lack of time frame " 潜在的限制有五个，包括光轮效应（成见效应） 、逻辑错误、没有足够的介入技巧评量工具、直属上司判断的限制以及没有时间限制。
