荷兰采购需求：涂料添加剂、聚合物添加剂

I'm currently in search of an additive specifically designed for white paint applications. The main purpose of this additive is to ensure thorough coverage detection, helping us confirm that the paint has been evenly applied across all surfaces. Could you please provide a sample for evaluation? It would be great to test its effectiveness before making any larger commitments. Looking forward to your prompt reply. Thank you!