Unipetrol (174,25 CZK, 0,00%) reduced output at its ethylene unit today following a technical problem with cooling units, it said in a statement on its website. The refiner is making steps to restore the production to standard capacity, according to the statement.Our view: We view the news as negative. There are no suggestions on how serious was the damage and how long will last the restoration works. There should be a negative impact on the company’s 2Q11 profits however the exact amount is still unclear.