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About product and suppliers:
            818 4ch mdvr products are offered for sale by suppliers on Alibaba.com, of which cctv dvr accounts for 30%. 

A wide variety of 4ch mdvr options are available to you, such as h.264, h.265. 

There are 331 suppliers who sells 4ch mdvr on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of 4ch mdvr supply is 100% respectively.