Available Materials ? Conductor: Bare copper ? Insulation: PE ? Outer Jacket: PVC Ye Zeal produces coaxial, control, audio, speaker, microphone, multi-core, and digital cables. Moreover, our products are made with environmentally friendly materials – a fact greatly appreciated by our customers. Ye Zeal is the best OEM/ODM choice in the global supply chain. We employ Scientific Management principles to produce quality products delivered on time. We have acquired ISO, UL, and CL3 certifications regulating product standards, and we are ROHS compliant. We are proud to be the green choice amongst the competition!