Here is a detailed overview of Rocket Lab Electron rocket. The rocket has many advanced features such as carbon fiber body, 3d printed engines, electric fuel pumps and other. This video by Everyday Astronaut goes in great detail to describe all the features, development history and future of this spacecraft. It also compares it to current small launch vehicles such as SpaceX Falcon series.
Electron homepage: https://www.rocketlabusa.com/electron/