All ONE LITE products have been developed with doctors and other healthcare professionals with over 15 years experience within the NHS, both within the community and hospitals. All our eliquid has been manufactured in the UK with each batch being individually tested prior to dispatch and each bottle is batch numbered to ensure 100% traceability to the manufacturing process and ingredients. ONE LITE only use high quality ingredients including pharmaceutical grade nicotine and food grade flavouring. ONE LITE also provides a lifetime warranty on all of its batteries and chargers, register your ONE LITE EGO kit to find out more.