The largest factory in Huizhou ranks first.

CNOOC Shell Petrochemical Base. According to the ranking of Huizhou factories, the largest factory ranks first in China Shipping and Shell Petrochemical Base, Huizhou, a prefecture-level city in Guangdong Province, which is located on the east bank of Guangdong-Hong Kong-Macao Greater Bay Area, with Luofu Mountain as its back and Daya Bay as its south. The Dongjiang River meanders for more than 1 kilometers, making it one of the central cities in the Pearl River Delta.