It's a professional manufacturer of wire thread inserts according to National Military Standard, Aviation Industry Standard and Unified Thread Standard and it also makes all kinds of related tools. 是一家生产国家军用标准、航空工业标准、统一螺纹标准等系列的钢丝螺套及各种配套工具的专业厂家。
Discussion on coping capacity of the national standard for common thread rolling pattern 对国家普通螺纹滚丝模标准修磨量的探讨