波兰采购需求：镀镍产品、镀镍材料、镀镍、耐腐蚀涂层、金属表面处理、工业涂层服务

I'm in the market for diamond powder that has been coated with nickel, specifically looking for a size around 20 micrometers. Before making a larger purchase, I'd like to start with a sample of 100 grams to evaluate the quality and suitability for my needs. Could you provide me with pricing details and let me know about the availability of this product? Any additional information about lead times and shipping options would also be appreciated. Looking forward to your prompt response!