The Riga kits were assembled by the Huangpu Shipyard in Guangzhou, and the Hudong Shipyard in Shanghai, from 1955 to 1958. These ships formed the PLAN's backbone in the 1950s and 1960s.
The Riga vessels were constructed by the Huangpu Shipyard in Guangzhou and the Hudong Shipyard in Shanghai from 1955 to 1958. These ships played a pivotal role in establishing the PLAN's naval presence during the 1950s and 1960s, serving as a cornerstone of its maritime capabilities.