Crochet Threads

Dear all,
i am murekatete eugenie, and live in rwanda. i am buying crochet threads and yarn in bulk and different types colors, since here we do not have any manufacturing company, we import all yarn from kenya with limited colors and types. i making different craft from threads and yarn, with an expanding market.
i would like to work with the supplier who willing to send the products in rwanda, and would like to know the modality and requirements of payment and shipment.
thank you