Shenzhen Oakley Technology Co., Ltd is an one-stop supplier & manufacturer of electronic cigarettes kits and accessories in China for more than 5 years. We are the earliest company to pioneer the tank, clearomizer, variable voltage, what's more, we are the only company who get the patent design on Efirefly battery and HAKA battery series which the LED display can indicate its capacity. Our products' quality standards have guided the industrial standards.