Anti-dumping investigations: procedural notice, mandatory information exchange, party participation, and adverse findings based on facts available. Investigations require the designated authority to publish a notice specifying the exporting countries, article, initiation date, basis for dumping and injury allegations, submission address and time limits; forward the notice and application to exporters, governments and interested parties; call for information with prescribed deadlines; accept submissions from industrial users and consumer organisations; permit oral presentations only if later in writing; share evidence among participants; and, if necessary, base findings on the facts available where parties refuse or fail to provide information.