As the effect of Covid 19 all over the world, there are less flight to send the documents.
even some agency can send the documents, but it will take very long time.
For example, usually we need 5-7days from China to Africa, but it need more than 15days now.
so if you can accept we make the surrender, that's the best way to send you the documents.
if can not accept, pls ask your supplier send the documents 15days in adavnce.
_______caustic soda supplier