são paulobraskem sa said thursday it lost money in the fourth quarter as sales dropped amid a slack in demand and an increase in supply from competitors the são paulobased chemicals company reported a net loss of 17 billion reais the equivalent of 325 million compared with net income of brl530 million in the prioryear quarter net revenue fell 33 to brl19 billion and cost of goods sold fell 11 to brl191 billion from a year ago the weak demand in the fourth quarter was partly due to the effect of chinas covidzero policy on its economy braskem said economic uncertainty in the us and europe also reduced demand while new production capacity of certain products from the us and china reduced spreads in world markets braskem said