Post more technical information on the material such as composition, recommended extrusion temperature, recommended build platform coating, etc. Then get involved in these forums rather than just posting ads.
People here will purchase your filament if they trust both you and your product. It's difficult to trust in your product without additional details or other forum members vouching for your business or products. Consider adding a "datasheet" to your website including the information above, then maybe send some small samples to *trusted* forum members in exchange for honest reviews.