This　article　investigates　the　impact　of　firms＇　policies　with　respect　to　procurement,　sales,　and　interfirm　personal　relationship　(guanxi)　on　industrial　purchasers＇　inclination　to　adopt　gray　procurement　(a　particular　type　of　unethical　behaviors　in　industrial　purchasing)　using　data　from　industrial　purchaser＇s　in　China.　The　effect　of　a　firm＇s　purchasing　policy　on　purchasers＇　behavioral　intention　towards　gray　procurement　was,　in　addition　to　the　direct　effect,　mediated　by　the　purchasers＇　ethical　judgment　of　the　practice.　The　application　of　double　standards　(i.e.,　a　firm　forbids　gray　procurement　by　its　own　purchasers　but　tolerates　its　salespersons　offering　inducements　to　its　customers＇　industrial　purchasers)　had　both　main　effects　and　moderating　effect　on　the　purchasers＇　ethical　judgment　of　the　practice,　which　increases　the　purchasers＇　behavioral　intention　towards　the　practice.　The　two　moderating　effects　of　guanxi　policy　counteracted　each　other　in　direction,　so　jointly　the　effect　of　guanxi　policy　on　the　purchasers＇　intention　may　depend　on　the　relative　strength　of　the　two　moderating　effects.　(c)　2014　Elsevier　Ltd.　All　rights　reserved.