Shenzhen Elongtech Ind. & Exp. Co., Ltdis ,jointed and invested by HONGKONG Sino Asun Group Ltd., Shenzhen Asun Ind.& Exp.Co.,Ltd and Shenzhen Green Tech Co., Ltd. Elong Tech is engaging high tech products and specializing in Research & Development, manufacturing and selling world-wide digital products and Tiredness Warning System. Elong Tech is dedicated to innovate, R&D, produce and sell technology advancements products, with thousands square meters' factories, and dozens of professional experts and engineers. Elong Tech has several production lines, advanced electronic inspection equipments, perfect quality control system and flow, and extended selling and service network, strong financial supports as well. Elong Tech has its own tooling housing factory, plastic injection factory, silk screen mill, spraying workshop and final assembling plant. Elong Tech has the capability in responding and assisting customers for their demands on developing, designing and production. Now Elong Tech's products include: MP3 players, MP3 watch, mp4 players, Tiredness Warning System and other electrical appliances. The TWS system is developed by Elong Tech and based on the 7 years of scientific research by the efforts of couple of experts. Elong Tech has Intellectual Property Right for the TWS. And the TWS is the first safety appliance for drivers which put into mass production for now. TWS is obtained the patent by the National Bureau of Intellectual Property, and tested by China Information Technology Security Certification Center, and Elong Tech is applying the global patent world wide for the TWS.