1. the ink is recognized by ce and tested by independent laboratory, and the markers can be used safely; 2. the ink can paste strongly on the skin and not easy to be erased in cleaning and disinfection; 3. both formulation and package ensure the validity of ink and can’t be dried up in normal use and without dry; 4. we usually use two kinds of skin markers in clinical, they are regular type (with 1 mm broad line) and fine type (with 0.5 mm broad line); 5. the package is equipped with a ruler; 6. sterilized products can meet the single use requirement and avoid infection; 7. the product is practical, good in appearance and low in price; 8. it has obtained fda and ce certificate and we undertake oem orders; 9. skin marker which does not belong to stationery and toy is a medical device, in line with the relating medical device standard are as follow: en552, eniso11137 and en10993, etc.