We want to find out about your marine insurance. 我们想询问你方的海运保险。

We have insured the shipment for 130% of the invoice value. 我们按发票金额的130%投保。 

We'd like to cover our ordered goods against WPA for 120% of the invoice value according to our usual practice. 根据我们的惯例，我们要按发票金额的120%投保单独海损赔偿险。

We'd like to cover our ordered goods against WPA for 120% of the invoice value according to our usual practice. 根据我们的惯例，我们要按发票金额的120%投保单独海损赔偿险。

That is acceptable. 这可以接受。