Taiwan and China as the fastest growth area in past 20s years for Quartz Crystal Devices Industry, including crystal resonators and oscillators. This paper surveys the industry development history in both Taiwan and China side, some key factors and turning points for the technology and industry emerged and will be presented. Recently, these crystal companies are facing challenges from both traditional quartz crystal giant Japan makers and innovative new solutions US companies. Meanwhile, from 2008, after the financial storm, the market demands for quartz crystals increase slowly and unit price drop continuously. In 2013, Japan's low-currency-rate policy makes pressure even higher. Facing the challenge from other crystal makers and the growth need for the revenue, Taiwan and China crystal companies need to put more efforts on products innovations and do better jobs on supply chains. Some major efforts will be reviewed and for the Quartz Crystal Devices Industry — The technology evolution and competitions still on the way.