I have order for nozzle 9*0.25*160. I need for my first order of 12 pcs. I shall buy it and I shall be testing it by our diesel-testing stand. If it quality will be good I can to buy more pcs. The needle it nozzle has diameter 6mm and must has 2 grooves and covering nitraition. And bushing of nozzle has cjvering nitraition too. Do you can to produce it? And Do you have certificate for it? Can you send to me foto it nozzle if you will interest for produce? And what is a price?