... This product is independent development bases on the newest national standard GB/T5507-2008"Foodstuff,Oil Plants Inspection Flour Thickness Mensuration ... ", and had replaced the original square shape flour inspection sieve. The testing principle is adopt the different specification screen ... 999s7,Motor power. 60W8,Working voltage.220±10%V 50Hz9,Sieve reseau: 25 eyes,41 eyes,51 eyes,69 eyes, ...