Some inferior goods were mixed in your consignment which, we think, should have been disposed of before your shipment.

贵方的货物中混有劣质货。我方认为，这种劣质货在装运之前就应该被处理掉。（主语和定语分隔以及定语从句主语和谓语分隔）

youdao

The shipment of "mixed plastics" was sent back to the UK and examined by the Environment Agency (EA).

BBC: Father and son admit illegal waste export to Brazil

Elsewhere, TV shipment volumes have been a mixed bag.

FORBES: Holiday TV Sales Will Help Corning Reach $13