"Sincerity, Innovation, Rigorousness, and Efficiency" is definitely the persistent conception of our corporation to the long-term to establish alongside one another with customers for mutual reciprocity and mutual profit for Shutter units, Auto iris diaphragm, Optical Shutter Module, Shutter units,Infrared switcher. Our professional technical team will be wholeheartedly at your service. We sincerely welcome you to visit our website and company and send us your inquiry. The product will supply to all over the world, such as Europe, America, Australia,Los Angeles, Mecca,Portugal, Albania.We always stick to the tenet of "sincerity, high quality, high efficiency, innovation". With years of efforts, we have established friendly and stable business relationships with worldwide customers. We welcome any of your inquiries and concerns for our products, and we are sure that we will offer just what you want, as we always believe that your satisfaction is our success.