Dear,
I need polystyrene nanoparticles to do my research work. The required size of polystyrene nanoparticle is 20nm/50nm/100nm. I will be beneficial if you kindly let me know the details of selling price of volume of polystyrene nanoparticles as per said sizes. If you can give this item I will buy it. I took forward to your prompt response.
Warm regards