Dear Sophie Hello Writing to you from Canada interested by your product : nano diamond additive for engine oil.... We need to know more about your additive we are using one type from Russia based in nano Cu ( Copper )that works good. We would like to test yours if it is more superior than the copper nanoparticles. Can you invoice us 30L in good price 40USD maximum quotation Looking forward to read from you please send us a MSDS of your product Best regards. : Show More