Jianlong hardware plastic product factory was founded in 2006, specialize in developing and manufacturing various electronic cigarette kits, vaporizer and related products. Jianlong hardware plastic product factory (also named Smkoo technology company ) which has our own marketing department, Production department and Shipping department is located in Bao an district, Shenzhen city, China. With 1000 workers and more than ten million annual output, our products are exported to five ...