OK Could not remember what I had found before so I checked again !! Seng Co only made the hardware,, !! there was a Seng Furniture Co. but evidently it was a different one and they were a retailer !!
So back to the mark on your table,, the pics are too big for me to enlarge !! And what is written on the white tag,, couldn`t read it either !! The number is unimportant !!