DAWSON ERGO TENSILE RATCHET LASHING STRAPS, PERMISSIBLE TENSILE FORCE LC 2500/5000 daN, PRETENSION STF ... one talking about ergo ratchet tie down, ergo ratchet lashing. They are not a common name in China, usually ... we have heard of ratchet straps, ratchet lashing, fastlash, tie down straps, cargo lashing, cargo control systems, web lashing, car lashing, tent straps, webbing load restraint systems, and ...