天通股份：公司压电晶体业务核心技术主要涵盖了包括长晶、退火极化等关键工序上一系列的工艺技术能力

Core Viewpoint - The company, Tiantong Co., Ltd. (600330), has highlighted its core technological capabilities in the piezoelectric crystal business, which include a series of process technologies such as crystal growth, annealing polarization, crystal rod processing, slicing, and polishing [1] Group 1 - The company has mastered the Bonding+SmartCut (ion implantation method) and Bonding+Grinding (direct bonding method) heterogeneous wafer bonding dual process technology capabilities [1]