... supply, heating system including flooring heating, wall heating and radiating system, Central air conditioning system, industrial liquids ... : low thermal conductivity which is only 1/1500 of brass pipe, and 1/250 of steel pipeNon-toxic: no ... than 50 years under normal conditionsRecycled and Environment-friendlyOur factory:The certificate:Why choose us?(1)Professional factory: We are manufacturer, ...