The WS-1 is a 302 mm self-propelled multiple rocket launcher used by the People's Liberation Army of China. It is part of the Weishi Rockets family of weapons systems. It was designed by Sichuan Aerospace Industry Corporation (SCAIC, also known as Base 062).
It is also adapted by Turkey's Roketsan corporation as TR-300 "Kasırga" and used by the Turkish Armed Forces and adapted by Thailand's Defense Technology Institute, Royal Thai Army as DTI-1.