Shanghai Industrial Company, also known as SIEG, is a Chinese manufacturer of metalworking and woodworking machine tools. Their machines are commonly rebranded and sold by retailers around the world. They make two lines which correspond to the colors the machines are painted. The "Red and Black Series" (Green when sold by Grizzly and available in a multitude of colours in the UK) are smaller machines aimed at the home shop market, while the "White and Blue Series" is intended for light industry.

The Sieg is a river in North Rhine-Westphalia and Rhineland-Palatinate, Germany named after the Sigambrer. It is a right tributary of the Rhine and 153 kilometres in length.