Our company offers variety of loudspeaker diaphragm and speaker parts. The material for the diaphragm include silk, Titanium, Aluminum, PEEK, PEI and so on. We also have Titanium or Aluminum composite diaphragm. The common wire material for voice coil are copper clad aluminum flat wire and copper clad aluminum round wire and pure aluminum flat or round wire. All the materials used for products comply with the RoHS standard. We also sales parts of compression drivers, such as Phase Plug, Rear Cover, Magnet, copper ring and so on.