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|Mercedes-Benz instantly {picked up|acquired|found|grabbed} a whole lot of recognition {for this|with this|because of this|just for this} model {when it|if this|in the event it|if it} {was first|was initially|was} presented {at the|in the|on the|with the} 2009 Frankfurt Auto Show in Germany. Although it {is not|isn't|just isn't|is just not} officially {out on|on|from} {the street|the road|the trail|the path} yet, {it is|it's|it really is|it can be} already {the safety|the security|the protection} automobile {for the|for that|for your|to the} Formula One Championship series, {and it's also|also it's|plus its|in fact it is} already featured {in the|within the|inside the|inside} PS 3 videogame Gran Turismo 5.
The rapid development of air filters is closely related to the development of military industry and electronic industry. In the first world war, the use of various chemical agents, asbestos fibre filter paper as the smoke filter layer of military gas masks came into being. The glass fiber filter medium is used in air filtration to obtain a patent in the United States in October 1940. In the 1950s, the United States studied the production process of glass fiber filter paper, and the air filter was improved and developed. In the 1960s, HEPA filters came out; In the 1970s, the filter paper of fine glass fiber was used as the HEPA filter of filter medium, and the filtration efficiency of particle size of 013 micron particle diameter was 99.9998%. Since the eighty s, with the emergence of new test method, use evaluation to improve and to improve the filtering performance requirements, found the HEPA filter there is a serious problem, and he had a higher ULPA filter performance. Countries are still working on it and expect more advanced air filters soon
The team emphasizes teamwork, so the work atmosphere of the team is important, which directly affects the team's ability to cooperate. There is no perfect person, only
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