SC, ASP, Magnum, Sanye, and Kyohso are all brands made by Sanye of China

SC was originally only sold through a wholesale distributor from Great Britain but you may see them sold by most anyone in China or the former English protectorate countries.

Hobby People are the main wholesale distributor of the Magnum line.

For others reading this CS engines are a different brand and manufacturer that stands for China Shang whereas SC stands for Super Custom.