质保用英语怎么说

在合同中比较官方的用法是warranty period

warranty period或者直接描述成warranty，外商都能够理解的。

1）超过12个月保修期的产品 the products beyond 12-month-warrant.2）未按产品使用说明进行安装、使用、维护、保管而造成损坏的产品； the products damaged by istallation ,usage ,maintenance and keeping not under instruction.3）私自修、涂改本公司保修标志的产品；the products with a defiled and obliterative warrant symbol4）任何由客户或第三方对产品所进行的维护、更改、变更或有其它影响的尝试而造成损坏的产品；the products that damaged by consumers or others' alteration , maintenance or other attempt influencing the quality 5）因不可抗力造成损坏的，如地震、水灾、雷击和运输交通事故等；the products damaged by force majeure such as earthquake, floods lightning strike ,transport accident and so on 6）客户在搬运、运输过程中，人为造成损坏的；the products damaged by consumers' transportation and movement7）经我司售后检测无质量问题的产品。the products that have none quality problem under our checkPS：完全手打，并参考一些英文说明，尽量保持准确

Please note that if any of the following conditions occur, you will be regarded as giving up your free warranty service.1)The products that exceed the 12 months warranty period.2)The products impaired in the process of installation，employing，maintenence and storage without using the operating instruction.3)The products of which the warranty logo was repaired or altered privately.4)The products impaired in the process of maintenance,modification alteration or other influcing attempts by the client or the third party.5)The products impaired by force majeure such as earthquake,flood,ligtening strike,transportation traffic accident etc.6)The products impaired in the process of portage and conveyance by clients.7)The products without quality problems in the after-sale examination by our company.我手打的,没有更专业的翻译的话可以凑合着用,应该没什么大的错误.

保修V．guarantee to keep something in good repair 保修期N．warranty period;guarantee period