Qingdao Sen yan graphite co., Ltd. (Www.qdsenyan.com) was established in 2004, located in Tian Zhuang industrial park, Pingdu, Qingdao. the company employs more than 100 people, specializing in the production and supply of high carbon graphite, high-purity graphite, flake graphite, micropowder graphite and graphite products. welcome users to purchase.undefined。