perennial exhibition meaning in Chinese

常年展览

After that , in case that the exhibitor needs to have a perennial exhibition and trade , such exhibitor can negotiate with our company on an equal and voluntary basis
此后，如参展商需要常年展示、展销的话，由参展商与我公司在平等自愿的基础上另行商定。
After the exhibition , the exhibitor can be refund all the margin in case the safety of the facilities of “ the center ” is not harmed ; for exhibitors who want to have perennial exhibition , their margin of exhibition reputation can be automatically altered to the exhibition charge in “ the center ”
展期结束，无损坏“中心”设施安全的，全额退还给参展企业，愿意继续常年驻展的企业，其信誉保证金可自动转为“中心”企业展示费用。