Japan client request to buy Fabric

We are from organisation registered in Japan. And we have project in Spain. We are looking for textiles and relevant products.
Could you possibly give suggestions and examples?
Other suggestions are also welcome (for example, general catalogues).
What is the minimum quantity?
Could you also indicate costs?
If you have normal cotton and ecological cotton, could you mention both prices?
Could you indicate shipping cost for Spain (Barcelona) and Japan (Saitama-ken, Tokyo Metropolitan Area)?