A technician compares samples of lubricant oil in the control laboratory at Royal Dutch Shell Plc's new lubricants blending plant in Torzhok, Russia. Photographer: Andrey Rudakov/Bloomberg
A technician compares samples of lubricant oil in the control laboratory at Royal Dutch Shell Plc's new lubricants blending plant in Torzhok, Russia. Photographer: Andrey Rudakov/Bloomberg