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1. armored petroleum jelly filled direct burried primary and secondary local telephone cables.2. Unarmored petroleum jelly filled direct burried primary and secondary local telephone cables (pain solid annealed copper conductor, high density polyethylene foam skin insulted, paired ten pairs sub-unit type).3. Air core self supporting aerial cables.4. flame retad indoor telephone cable.5. Jumper wiretotal quantity: more than 2,000 Km Telecom, networking, Cables Telecommunications equipment & services