Bike front handlebar led mini bicycle light with adjustable inclination

Which payment term can we accept?  
T/T or L/C ,
1. On T/T term,30% deposit payment is required in advance, 70%balance payment T/T before shipment
2. On L/C term,100% irrevocable L/C at sight ,without ‘soft clauses’ can be accepted.  

How long will the price be valid?  
The price valid time is 90 days, we only adjust our price based on two situations:
1.The rate of USD:RMB varies significantly
2.The cost of the machine, because of the increasing labor cost and raw material cost.

What logistics way we can work for shipment?
Normally, the shipment will go by sea, if buyers have other requirements ,we will do the shipment according customer’s requirement