How to Pre-oder Vortex on DFRobot

1. Open your page for the new product, for example, Vortex 2 Pack
2. Input the quantity of your purchase and click the shopping cart:

1. Select check out 

1. Step one: input your bill address and delivery address::

1. Step two: select your delivery method

1. Step three: select your payment method, if anything to notice, just write down in the comments

1. Check everything and then confirm the order

1. Then pay your order

  Note: The package will be delivered around November