Decorative fittings are released in different seasons like Xmas & Halloween. It usually comes with Stereo Puzzle as seasonal bundles. It’d be very attractive in gifting seasons. You can personalized your Stereo Puzzle, simply assemble fittings you like on your Stereo Puzzle.
This strategy makes Stereo Puzzle more attractive and competitive in different seasons, and we don’t need to make discount to attract customer to purchase.