All the time since, day shuttle is depending on the mental research and development that is brave in to innovate of all kinds and lead product, and in respect of green environmental protection, also go in the forward position of industry. The research and development of the green craft that the brand devotes oneself to health of avirulent and harmless, environmental protection all the time and machine core and production, reflected day shuttle adequately to reach future to give birth to the intense mission that keeps an environment to optimize to feel to the life character of society, mankind. In day shuttle is designed in what wrist expresses and making technology, also added the element of green environmental protection, PVD vacuum ion eletroplates, remove dust filter system, and those who roll out G10.211 machine core and titanium metal is extensive apply, from treatment craft serves to maintenance, express machine core and select material to wrist again, all without exception reflects the day shuttle support to green environmental protection and praise highly. PVD, it is English Physical Vapour Deposition (deposit of physical gas phase) abbreviate, also say vacuum ion eletroplates, it is law of a kind of environmental protection finishing. Come nearly more than 10 years, the development of technology of vacuum ion plating is the fastest, it has been become current one of the most advanced finishing means, the contaminant of pair of air and environment won\’t arise in eletroplating process. PVD vacuum ion eletroplates to also be applied the treatment that expresses at wrist, this treatment craft has particular feature and advantage: The first, wear-resisting is spent tall, the plated film that produces is taller than degree of wear-resisting of conventional plated film fivefold, be next to sapphirine crystal, it can protect watchcase and watchband effectively; Anti-corrosive, as a result of,can prevent effectively climate change, seawater, perspire adversary expresses corrode; The watch that has PVD film looks more grace and high-grade. In numerous series, day shuttle had a lot of watch moneys to use PVD vacuum ion to eletroplate craft, the PRC100 of fashionable ocean wave, motion, classical treasure annulus, elegant sea star, have more PVD technology is used on metal of high-tech material titanium, the series of star product T-TOUCH that is day shuttle then. In pledge gently firm fight irritability PVD film technology is used on strong titanium metal, make titanium metal has special color or more dazzle is bright. Titanium is a kind of tantalum that discovers in the lithosphere. It is bright, have burnish, it is color of a kind of silver grey the powder of dark perhaps gray. In rock can extract in volcanic perhaps deposit. Because it is harder than steel, and lighter, should expose at air is medium, titanium metal still can fight oxidation, titanium metal is special apply to aviation industry. Day shuttle begins to use titanium metal first from 1997 make at watch in, rolled out the titanium that has 7 functions \” 7 \” wrist watch. Since then, in each series that titanium metal uses Yu Tian shuttle extensively, from suit outdoors and cross-country T-TOUCH series, to the PRC100 series of athletic style, arrive again the PR50 series with classical style, can see the figure of titanium metal. Titanium metal does not contain nickel, than other material more fight allergy; The most important is the recycle after it can reclaim, environmental protection of 100 % green.