Hello, please provide our company with a commercial offer for the supply of powdered copper concentrate with the following technical characteristics: 1. Content (mass fraction) of Copper in concentrate - no less than 18%; 2. Content of impurities in concentrate: Zinc - no more than 7-8%, Lead - no more than 4.5% or according to the Manufacturer's Technical Specifications (upon agreement of the parties); 3. Humidity: mass moisture fraction in dried copper concentrate - no more than 7.0%, in non-dried copper concentrate - no more than 13.0%. 4. The size of the pilot batch is 2,000 tons; 5. Annual consumption - up to 20,000 tons; 6. Delivery method - by rail DAP Zhengzhou or sea delivery CIF Tianjin Port (PRC). The content of the main substance Copper, as well as the content of impurities in the concentrate, can change for each batch and agree on each schedule line individually. Please provide a technical and commercial proposal indicating the price and delivery time for a pilot batch of 2000 tons of copper concentrate with a supply basis on conditions or self-pickup EXW warehouse manufacturer or with delivery to China on delivery details according to clause 6.