English to Chinese Tech/Engineering Law: Patents, Trademarks, Copyright 合同

Whilst it manufactures Customer Products incorporating products and for 6 years thereafter Customer will maintain a comprehensive liability insurance policy, products liability inclusive, on terms customary to the industry and naming Life as an additional insured. Such insurance shall be for an insured sum of not less than US$1,000,000 combined single limit for each occurrence. Customer shall upon request provide Life with a certificate evidencing such insurance. 虽然它生产客户产品组合产品，客户将持有综合责任保险（包括产品责任）6年，期限按行业习惯，将Life作为附加被保险人。这样的保险应当不低于1,000,000美元单个组合的限制保额。客户应根据请求向Life提供一张证书，证明这种保险。

combined single limit for each occurrence这里不是很明白。