are these made of or containing natural wood? there is a prohibition about sending natural wood items to china. you might want to check into this.
it is difficult. I lived, work there and still commute frequently. we send stuff for work and things can get held up for weeks or longer. they can be sent back to you. electronic items sometimes need a classification to certain electronic standards. even if the manufacturer certifies by a placard on the item customs may request an original cert of compliance from the manufacturer. it is a roll of the dice, I wouldn't do it.