Shenzhen Airlines is Certified as a 3-Star Airline for the quality of its airport and onboard product and staff service. Product rating includes seats, amenities, food & beverages, IFE, cleanliness etc, and service rating is for both cabin staff and ground staff.
“A subsidiary of Air China, Shenzhen Airlines product is to a similar 3-Star standard and is now looking old-fashioned and in need of upgrade. Inflight entertainment and onboard catering require change. Cabin staff service is better than Air China but is Chinese domestic level and below international standards. The domestic Business Class lounge (they call it First-Class) lounge at Shenzhen Airport is good.”