As email below from the PIC of Nippon Seiki, the details in shipping documents is not clear enough to do the Customs clearance in Vietnam, so it should be revised next Monday, after confirming again with Nippon Seiki san.
To avoid revising docs again, for every shiptment to Vietnam from now, please
send me the draft of shipping docs for checking before issuing the original ka :)
Thank you for your cooperation.