Sung Shin Rolling Stock Technology, also stylized as Sung Shin RST, is a South Korean company manufacturing rolling stock and equipment.

[1] The company was founded in 1990 as Sung Shin Industrial Company.

In 1994, the company changed its name to Sung Shin Industrial Company, Limited and again in 2009 in its current one, to indicate its focus on railway systems such as bogies, locomotives, coaches, and systems integrator in the international stage.

[2] Notable projects include supplying some of South Korea's maintenance vehicles, rehabilitation of KTX trains and passenger coaches.