Zhenhai Refining & Chemical (ZRCC) has shut down its high density polyethylene/linear low density polyethylene (HDPE/LLDPE) swing unit for a brief maintenance. The units were shut down last week and are likely to remain off-stream for around 10 days. Units aaare based at Ningbo city in Zhejiang province of China and has the manufacturing capacity of 4,50,000 mt/year.