Sirang Daneh Najin products using the best approved raw materials of domestic petrochemical units and the highest quality additives and pigments Imported European for every taste and also for every quality level using the latest machines of this industry is produced.It is worth mentioning that before mass production and final masterbatch, the sample of the part or the sample of customers in the specialized laboratory of this company is simulated color matching and qualitative and quantitative tests with all digital machines and after final approval by the unit quality control and laboratory and finally customer approval to mass production with the same formula and under the supervision of quality control unit is produced.