Some observers have suggested that the company should be given credit for increasing the standard of service in markets that it enters. A group of anthropologists in a study entitled Golden Arches East  looked at the impact McDonald's had on East Asia and Hong Kong, in particular. When it opened in Hong Kong in 1975, McDonald's was the first restaurant to consistently offer clean restrooms, driving customers to demand the same of other restaurants and institutions. McDonald's has taken to partnering up with Sinopec , the second largest oil company in the People's Republic of China, as it takes advantage of the country's growing use of personal vehicles by opening numerous drive-thru restaurants.  McDonald's has opened a McDonald's restaurant and McCafé on the underground premises of the French fine arts museum, The Louvre .