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河北省保定市宏声声学器材厂（原化新压电陶瓷器件厂）生产的PMN压电材料，其配方于1987年通过了由声学专家组成的省级技术鉴定．这是一种高KP，高介电常数，低Q。的压电材料，适用于接收型换能器．该厂目前已形成PMN、PZT等四大系列产品的生产能力：1．用P（ZTNU七；压电材料
PMN piezoelectric materials produced by Hongsheng Acoustics Equipment Factory (formerly New Piezoelectric Ceramic Factory) in Baoding City of Hebei Province passed the provincial technical appraisal made up of acoustic experts in 1987. This is a high KP, high dielectric constant, low Q. Of piezoelectric material, suitable for receiving transducers. The plant has now formed PMN, PZT and other four series of products production capacity: 1. P (ZTNU seven; piezoelectric material