1.usage 2.feature 3.picture API bottom loading adaptor is installed on the side of tanker bottom, used for quick unloading. 1 Integral cast aluminum coat, anodic oxidation treatment, and changeable parts.2 Using flatbed structure for exit to ensure liquid fully discharged, no oil leak.3 Bi-level stabilized alloy pusher, showing the place of the valve clearly.4 Die-Casting Aluminum structure, ...