Here at Vape 420 Market, We make Kingpen oil in our own state-of-the-art manufacturing lab. 710 Kingpen Cartridges. We distill it 5 times producing a high quality product that passes strict qualitative and quantitative tests. So, we then add proprietary blends of terpenes to achieve the best flavor possible. However, No PG, VG, PEG or other additives.