buy Guard and Emergency

we are in urgently need of very cheap and normal basic electric bicycles.
the initial order quantity will be 20000 units if all are well.
the suppliers must can meet the below requirments:

1. can have the strong capacity of making 20000 units within 3 month

2.the e-bikes must be simple and normal ones with an extra battery bonded with it to make the driving range to be 100km+

3. can mee the price FOB USD120

4. can have the load capacity of 120kg+

we are looking for 3-4 diffenent designs and will require smapes firstly to test.

only makers who can meet the above requirments can contact me imme