Men's underwear organic cotton

We are a newly established copenhagen based underwear company looking for a reliable supplier We found you on turkish-manufacturers.com and are very interested in a cooperation and placing an order on a high quality or premium quality all white boxershorts with elasticband.
Regarding fabric we wondered if you could use certified organic cotton?
Is it possible to order a smaller sample in advance in S, M, L and XL, before placing a larger final order (more than 500 pieces)?
Do you have the p