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Jones and Nachtsheim(2011)proposed a new class of three-level screening designs called Definitive Screening(DS)designs,and it received much attention due to its appealing statistical properties.This work consists of two parts.The first part reviews the systematic construction of three-level DS designs proposed in Phoa and Lin(2015),which utilized the circulant property of the designs.The second part proposed a similar systematic construction method for two-level DS designs.