Who made thrusters?

Could you please clarify for me who exactly was responsible for creating or manufacturing the thrusters that you're referring to? Are they part of a specific spacecraft, aircraft, or perhaps a different type of machinery? It would be helpful to have more context in order to accurately answer your question. Additionally, is there a specific brand, model, or manufacturer that you're interested in knowing about? Please provide as much detail as possible so that I can provide a precise and informative response.