Buying lithium ore to China

We would like to buy lithium ore on a regular basis.
Our monthly demand: 5000-10000 tons .
Terms of delivery: FOB (to China).
Please send your offers giving the following information:
1.  Can you offer monthly about 2000 tons above sustainably?
2.  How many tons for your mining site deposit?
3.  How many percent mainly for your mining site?
4. Would you send us sample for our analysis?
5. If we want to visit your mining site is it available anytime?
6. How do you control and make sure the quality for a heap of lithium ore? How to pick up them for sampling?
Looking forward to your offers with the quotation.