Cable End Caps

We are seeking quotations for Yttrium Carbonate, electronic grade, with purities of 99.9% (3N) and 99.99% (4N). Please provide separate quotes for each purity. Quantity required is approximately 1 ton per month. Price terms should be CIF Incheon, Korea, in USD per kg. Also, include COA, product specification sheet, packaging details, and HS Code. Potential for long-term cooperation if terms are suitable.