Sinopec-SK Wuhan Petrochemical Co., a subsidiary of state oil and gas group Sinopec Corp., is planning to shut down its 1,70,000 bpd refinery in late October for approximately 50 days of maintenance. The Wuhan-based company is due to switch off an 800 000 tpy ethylene plant from around mid-October for a regular overhaul for a similar duration, according to a report on Sinopec’s website.The ethylene facility is a joint venture between Sinopec and South Korea’s SK Innovation.