Export Data, page-269

Any ideas why the shipment tonnage in December is significantly below November? By this time last month we had 400 tons more shipped. There could still be some very big shipments going out at the end of the month but with holiday season starting now it might only show up in January. If production is still on track, given the the lower shipping, we should be building up stock at the moment? Or is there much of a delay when processing feedstock carbonate to hydroxide that could reduce quantities of carbonate shipped but will then obviously go out after processing?