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      ??? According to the needs of users, we can design and manufacture all kinds of lenses with special parameters: such as front projection fixed focus lens, front projection zoom lens, back projection lens, short focus\ large field of view projection lens, high-grade security\ industrial monitoring lens, infrared optical lens, large zoom optical imaging system，and so on. 
      
??? In addition, a variety of projection lens can be reverse designed according to customer requirements 
      
		  
      
	      
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