THINKTANK is the sole production and R&D institute of Taiwan STONE Company in Mainland China. ThinkTank entered China market in 2002 and separate Shanghai office in 2012. Based on over 30 years experience in researching and manufacturing automatic instruments, bringing in overseas advanced technology and combining domestic users real working situation. We have got 150+ amazing folks all over the factory and office working tirelessly to provide you with the best professional complete solution in your unique industry. To ensure the high quality of valve, THINKTANK set up own valve casting factory. From raw material to finished valves, we effectively control each process.