... duty shelf: suitable for factory, workshop, library, stores etc long span shelf,shelf,medium duty shelf:1), Very suitable for loads ... available;10), Container load:10-15 ton per 1x20 container, 20-25 ton per 1x40 container11), Delivery time: 12 days for ... 1x20 container, 20 days for 1x40 container12), Payment terms: By TT or sight ...