TongYuanDa factory use premium phone wire insulation in our landline phone cord for crystal clear, static-free sound every time. Our Telephone Cable cords work easily with any phone or device with a phone jack. Our landline phones are made of premium quality, durable materials with superior stretch and elasticity, so they’ll last for years to come. Making your life easier. Our factory will supply many different phone cables, for example Round Telephone Cable and Flat Telephone Cable as well as Slim Telephone Cable, also include 4 Core Telephone Cable and 8 Cores Telephone Cable. Any information, please feel free to contact us anytime.