Our products including rubber and line use Silicone and EPDM.Conduct the wire core is spiraled by metal wire, charcoal core and copper core,the Electric resistance value can be reordered and produce.Our company may manufactured any colours' products.The quality accord with the GB/T14820.3-93 and ISO3808 standards,and the price is very reasonable.The nature price compares are very high.We sincerely welcome customers to talk over business.