Selling nano copper powder, different purities available, CIF to any port

I am selling copper powder and right now I have 170 kg nano copper powder for sale in these purities:
- 99,6071 
- 99,574 
- 99,7029 
- 99,6985 
- 99,6762 
it is stored in warehouse in Germany. 
Price: 45 euro per gram, negotiable.

Also available: 
1) 290 kg of ultrafine copper powder in 4 qualities and quantities. All stored in sealed 2 kg glass bottles.

a) 100 kg of 99.9919% purity, size smaller than 2 µm 

b) 100 kg of 99.9950% purity, size smaller than 2 µm 

c)   90 kg of 99.9978% purity, size smaller than 2 µm (papers 100 kg, 10 kg sold recently) 

2) Origin: South America 

3) Location: Germany and Switzerland, in safety warehouses with safe keeping receipts.

4) Port of loading: Germany and Switzerland 

5) Destination Port: CIF to any safe port 

6) Price: EUR 75 per gram – negotiable 

7) Lead time: 10 days after payment received (logistics company needs time) 

8) Loading: Pickup by courier, air cargo 

9) Documents: 1 original invoice + 3 copies, original packaging list, certificate of origin 

10) Payment methods (TBD): 

a) Buyer mandate or buyer inspects product at the safety warehouse, bank transfer,  safety warehouse releases products to new owner, own transport or by courier 

b) 100% irrevocable, confirmed, non-transferable,  letter of credit issued under MT 760 – preferred payment method.