北京利德赛工贸有限公司
Primary Flow signal Inc.

北京利德赛工贸有限公司成立于2001年，主要从事自动化系统、仪器仪表的研制，石化过程优化控制，国外自动控制设备和仪表的代理销售和服务，以及咨询、培训、转让，进出口贸易。PFS中国总代理，产品有：楔式流量计、文丘里流量计、高压孔板节流装置，流量喷嘴，涡轮流量计等高精度气体、液体和蒸汽流量测量元件。

PFS is headquartered in Cranston, RI,with a world reputation for reliability, accuracy, and customized manufacturing in flow elements industry.Through evolving product lines and research and development, the company continues to lead the market, and its products outperform competing technologies. China exclusive distributor: Lead-Sail (B.J.) Industrial Ltd.