https://biz.prlog.org/tag/pdh/ PDH - Free business directory on PRLog.Org, latest companies listed first. 60 https://biz.prlog.org/HiOSO-CN/ HiOSO Technology founed in 2002. It is professional in fiber optic communication equipments. Main products include: ethernet fiber media converters (managed/unmanaged/node types), EPON, CWDM, digial video optcial transceivers, fiber modem and PDH.Mon, 13 Apr 2009 06:18:34 GMT