Tonspark is a maker specialized in fabricated valve covers (new styles) . We have a series valve covers made by an unique manner of “from a single aluminum uniqueed object” then processed by CNC machined and welded skill which can provide various different valve covers from a tooling, such as valve cover for Chevy, Ford, Chrysler, Pontiac , Jeep etc...And had obtained patent registration in Taiwan.(Taiwan patent no. M 332734)商業計畫書撰寫
