It's likely they had no contractual agreement with the current owners of the inverters, and yet they have elected to wilfully damage the property of the current

It's likely they had no contractual agreement with the current owners of the inverters, and yet they have elected to wilfully damage the property of the current owners because they can. Wilfully damaging someone else's property without permission of the current owner seems pretty malicious, regardless of whether the importers (or maybe someone who supplied to the importer) were in breach of a contract.