Please, send additional information about your product - dermaroller, as follows:1) What kind are the needle tips: metal, stainless steel, stainless steel plated, golden plated or plastic?2) What is the needle thickness at the tip zone and what is it at the base zone?3) What kind of chemical or adhesive has been used in the needle assembly process?4) Do you offer 3-line roller besides the standard one?5) Can I buy certain number of separate types, e.g. 10 of 0.25 mm, 10 of 1.5 mm and 10 of 2.5 mm...?6) What is the price of your product?7) What is the shipping cost to Bulgaria?8) What is the estimated delivery time?As well I am interested in Suction Unit for laser ablative treatment (absorber; aspirator for gases, particles, etc.)SincerelyProf. R. YankovaMediderma Clinic32 Yanko Sakazov Str., 4000 Plovdiv, BulgariaFax: +35932602571; www.mediderma.bg