 | Hitop Optic Vapor Material Co., Ltd. Hitop industry CO.,Ltd is a corporation specialized in scientific research and manufacture optical vapour deposition materials esstablished in 1999. The leaders of the cooperation are mainly the experts who come from the Chinese Academy of Scienc... We are regularly Selling: aluminum oxide al2o3, evaporation material, quartz ring, niobium pentoxide nb2o5, silicon dioxide sio2, sputtering target, tantalum pentoxide ta2o5, titanium dioxid tio2, zirconium dioxide zro2. Member since 1 January, 2008, China - Guangdong |