波兰采购需求：维生素K2、人参提取物、β-胡萝卜素、大蒜粉、生姜粉、菠萝粉

I'm looking for a technological sample of 1 kg of sweet potato extract with a purple color. Could you provide details on the available options, including pricing and lead time for delivery? Additionally, if there are any specific product specifications or certification documents that come with the sample, please let me know. This will help us evaluate the product for our needs. Looking forward to your prompt response!