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      After years of development, we have established an efficient system for R&D and production. We have invested large amount in introducing and importing advanced technology and equipment worldwide, and personally participate in the mold design, production and development for video door phone and access control series of products with good accomplishment. The products manufactured by our factory are with excellent design, stable and durable quality. All of our products are strictly in accordance with the standard and request of ISO 9001 quality management.