Selling ultrafine nano copper powder 99,9997 from Switzerland

I am offering ultrafine nano copper powder with the purity of 99,9997 stored in Switzerland. There are 300 kg available.
Packaging: copper powder is packed in plastic bottles of 2 kg, 20 bottles in a cardboard box (40 kg)
Price around 200/g USD$ ( negotable - depend on the quantity)
Minimum order quantity  -100 kg.
We will help with the assessment and IGAS/ISE certificate.
Location: Customs-Free Zone in  Zurich Airport, Switzerland.
PPayment method: prepayment or settlement via an Escrow Account in a bank of mutual agreement between the Seller and Buyer.
Logistics: EXW, FOB – can be discussed.
Let us know if you are buying.