Which contractor services the dock equipment at this berth?

How to say “Which contractor services the dock equipment at this berth?” in Japanese

In Japanese

ここのバースの岸壁設備(がんぺきせつび)って、どこの業者(ぎょうしゃ)が点検(てんけん)してるの？

Koko no bāsu no ganpeki setsubi tte, doko no gyōsha ga tenken shiteru no?

Which contractor services the dock equipment at this berth? in other languages