CREATE TABLE table_9680 ("Company" TEXT, "ICB Sector" TEXT, "Ticker symbol" TEXT, "Index weighting  ( % )  at 17 January 2013" FLOAT, "Market cap. at April 2013  ( \\u20ac ) " FLOAT)

Which ICB Sector belongs to vallourec?
SELECT "ICB Sector" FROM table_9680 WHERE "Company" = 'vallourec'
SELECT "ICB Sector" FROM "table_9680" WHERE "Company" = 'vallourec'