Agence France-Presse: A Swiss company which produces an oil absorbing fabric said Tuesday that it had received a visit from US officials, as it claimed that it could help tackle the Gulf of Mexico oil slick. Carlo Centonze, chief executive of HeiQ Materials, said US army and consular officials came to visit last Thursday to evaluate the fabric to protect the US coastline. “Our product is being presented today (Tuesday) in Washington and we are waiting for the green light from authorities to deploy …