Preformed fittings tau tsim los ntawm PLP Corporation hauv Tebchaws Meskas hauv xyoo 1940 thiab tau ua tiav hauv ntau lub siab -voltage kab txawv teb chaws tau ntau xyoo. Hauv kuv lub teb chaws, preformed fittings pib siv nyob rau hauv 1980s, feem ntau nyob rau hauv tag nrho cov -dielectric tus kheej- txhawb optical fiber cables (ADSS), kho qhov muag fiber ntau composite overhead hauv av xaim (OPGW), thiab ultra- siab -voltage transmission line projects.
Hauv cov cheeb tsam tau txais kev pabcuam los ntawm daim phiaj hluav taws xob, cov khoom siv ua ntej tau pib siv rau ntawm cov neeg siv nyiaj siv ua haujlwm tom qab xyoo 2008 Southern China ice cua daj cua dub. Cov ntaub ntawv dav dav los ntawm kev ua haujlwm ntawm cov khoom siv hluav taws xob qhia tau hais tias cov khoom siv ua ntej ua tau zoo dua piv rau cov khoom siv ib txwm muaj, suav nrog kev ntxhov siab, cov cuab yeej - kev teeb tsa dawb, kev pab cuam lub neej ntev, thiab kev poob qis. Txawm hais tias tus nqi tsim khoom ntawm preformed fittings yog me ntsis siab dua li cov tsoos fais fab fittings, nyob rau hauv lub sij hawm ntev, siv preformed fittings yuav txo tau cov nqi khiav hauj lwm ntawm cov kab.
