... company in China who can produce NIJ III plate with big area.This plate can resist 7.62 X39mm, 7.62 X ... 25mm, weight 1.5-1.7Kg.NIJ III alumina ceramic plate: size 300mm X 250mm X 18mm, weight 2.4Kg.NIJ ... 250mm X 6mm, weight 3.5Kg.NIJ IV alumina ceramic plate: size 300mm X 250mm X 22mm, weight 3.0Kg.NIJ ... IV carborundum ceramic plate: size 300mm X 250mm X 22mm, weight 2.4Kg. ...