What thrusters does SpaceX use?

I'm curious to know, what specific thrusters does SpaceX utilize in their spacecraft and rockets? Are they proprietary designs or sourced from other manufacturers? What materials and technologies are incorporated into these thrusters to achieve optimal performance and efficiency? Additionally, how do these thrusters contribute to SpaceX's mission of making space travel more accessible and affordable? I'm eager to learn more about the engineering behind these crucial components.