Several refineries in Asia undertake routine maintenance in the low-demand second quarter,
which usually prompts both lower official selling prices(Osps) from Middle Eastern producers such as Saudi Arabia,
as well as sharper discounts in the physical markets.
It's an almost unprecedented response by a significant buyer of Saudi crude, and it underlines the extent to
which the market was caught by surprise by Aramco's decision to increase the official selling prices(Osps) for May-loading cargoes.