Qinhuangdao Great Wall screen plant; Qinhuangdao Changlong screen Ltd. - China

The plant is the production projection, screening, and electronic , the military, research various screen, the screen of professional manufacturers. Production projection is for (the projector) High more than 30 low-grade specifications series of more than 100 products. Plant products to meet the the screening of military , scientific research, case studies, audio-visual , national defense, large screen display supporting large-screen projection television, and many other application requirements. production back permeability is high for more than 30 low-grade specifications series of more than 100 products, South Korea, Taiwan, Hong Kong , Singapore, and other countries and regions have established the plant for long-term sales, the Board of is ching equipment sentinel plant.  

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"high-definition rear-projection screen," Patent No. ZL97203325.4 and won for the first 99 new technologies and products Expo Gold Medal.