ICS 31.180UNSPSC 31.19.15CCS L 30团体标准T/UNP 388—2024可识别不良板的PCB板材生产工艺技术规程Code of practice for PCB board production process technical of identifying bad board2024 - 12 - 19 发布2024 - 12 - 19 实施中国联合国采购促进会 发布目次前言.................................................................................. II引言..................
