COPENHAGEN (Reuters) - A.P. Moller-Maersk will merge Damco Supply Chain Services and Maersk Line's Ocean Product, the Danish shipping giant announced on Wednesday, as it seeks to offer customers the chance to deal with one firm when shipping goods across the world.The operator of Maersk Line, the world's largest container shipping company, kicked off a restructuring drive in 2016 that saw it sell its oil and gas business last year to focus on transport and logistics business. Maersk said its..