... and protect enviroment good.4,new equipment from Germany,save time and money .high technolgy.5,wheels made of powder,use longer ... lot.Feature:1 with100%imported high-density polythylene material one-time injection molding,acld and alkali restance ,corrosion resistance,easy ... double diamond trontier by reinforced structures ,trailers service life is ordinary barrels of more than two times.3 the barrel ...