Share on (60588945388):
These swinging balls will keep you occupied for hours at work. This is a clever device that not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.





Packaging:
usually inner carton -→ outer box (singer layer and double layer) -→ pallet and can be packaged per your request.
Shipping:
a: the weight is under 40Kg,we will choose DHL, FedEx or UPS with shielding box for you ;
b: the weight is over 100Kg,we will choose shipping for you;
c: the weight is between 40Kg-100Kg, per you request;





A: If the goods are in stock, we will deliver them immediately after we sign the contract and decide the payment. If the goods are out of stock, it will be produced from the material. The lead time is 7-25 days.
A: All available shipping ways could be applied, by courier, air or sea. Full-way tracking the cargos for you before the goods arrive.
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
A: according to your request.
New products from manufacturers at wholesale prices