型号经济型NF30-CSNF63-CWNF125-CWNF250-CWNF400-CWNF630-CWNF800-CEW标准型NF32-SWNF63-SWNF125-SWNF125-SGWRTNF125-SGWRENF160-SWNF160-SGWRTNF160-SGWRENF250-SWNF250-SGWRTNF250-SGWRENF400-SWNF400-SEWNF)