Most freight forwarders will not ship anything less than a pallet. Based on my experience, you'll have the following options:
(1) Use post office, DHL or similar. It helps that your boxes are light.
(2) If your product doesn't expire quickly, ship 2-3 months at once as pallets.
(3) Find someone else to share pallets/shipments. The shipping cost for the second pallet is a fraction of that for the first and once you get to container load, you pay next to nothing.