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 Graphene quantum dot solution with different concentrations of DY-SG-156 is composed of graphene quantum dot in deionized water or other organic solvents (such as DMF, NMP etc.) in the acoustic gain. The company can provide 0.1mg/ml to 1mg/ml concentration, solvent comprises deionized water, DMF, NMP etc.

Zhengzhou Dongyao Nano Materials Co., Ltd. mainly engaged in sales of the project of metal nano materials, nano inorganic materials, organic materials, green environmental protection material,mechanical equipment, the products have been sold to the world more than 50 countries and regions.The company has passed ISO9001:2008 international quality system certification, has authorized 5 patents of invention and 15 utility model patents. The company always adhere to the"technology leading, customer first, integrity management" principle, is committed to building the world's nano materials gold supplier. Warmly welcome people from all walks of life to visit and give guidance, to visit and negotiate business, to create a better tomorrow.

 1)Q: How to place an order ?
   A: 1. Tell us the model and quantity, consignee information, shipping way and payment terms.
       2. We make the proforma invoice and sent to you.
       3. Complete Payment after confirmed the PI
       4. Confirm Payment and arrange production.
       5. Ship goods to you
       6. Send the tracking number to you.
       7. Goods delivered

2)Q: What is the payment way?
   A: Western union, Bank transfer(T/T), Alipay all for Option.

3)Q: What is the Delivery time?
   A: Based on the quantity, usually we will send the products to you in 2-3days after you make the payment.

4)Q: How can I guarantee the goods in good condition?

   A: We are golden supplier on alibaba, and we will test the goods before shipping

5)Q:What is the delivery method?

   A: DHL,EMS,TNT ,Fedex etc.