你正解。一方面可以和工厂签保密协议。另一方面,是我最担心的问题,这个客户是个从事外贸40年经验的老手,UL编号一给,上面显示的不是我们的信息,即使跟他解释是sister-company,他也不信。以下更是他一直要求我们给证书编号的原邮件:If your management he nothing to hide and he a legitimate UL approval member they should he no problem with sending the certificate or E number. There he been to many companies that show false UL certificate, so please don't make me look bad to my customer and send the certificate as requested.[收起]