++++ 1 . Common commercial policy - Protection against dumping practices - Dumping margin - Determination of the normal value - Constructed value - Taking account of a reasonable profit margin ( Council Regulation No 2176/84, Art . 2 ( 3 ) ( b ) ( ii ) ) 2 . Common commercial policy - Protection against dumping practices - Dumping margin - Determination of the normal value - Constructed value - Cost of production - Selling, administrative and other general expenses ( Council Regulation No 2176/84, Art . 2 ( 3 ) ( b ) ( ii ) ) 3 . Common commercial policy - Protection against dumping practices - Dumping margin - Determination of the normal value and the export price and their comparison - Distinct rules ( Council Regulation No 2176/84, Art . 2 ) 4 . Common commercial policy - Protection against dumping practices - Dumping margin - Miscalculation - Effect on validity of the anti-dumping duty - No effect on account of the fixing of the rate of duty at a level of injury which is below the real dumping margin ( Council Regulation No 2176/84, Art . 13 ) 5 . Common commercial policy - Protection against dumping practices - Injury - Determination on the basis of a comparison between import prices and the prices of Community products calculated irrespective of fall in the latter as a result of dumping - Legality - Condition ( Council Regulation No 2176/84, Art . 4 )