FDO4-BV1-3L (Babban bawul ɗin malam buɗe ido)
A takaice
Yana da halaye masu kyau na yanayin zafi da sanyi, kuma diamita bawul din yayi daidai da diamita bututu, kuma zai iya rage asarar zafin wuta na matsakaici a cikin bututun. Domin safarar matsakaicin danko wanda zai karfafa a yanayin zafin dakin. Dangane da tsari daban-daban na bawul din, ana amfani dashi sosai a cikin bututun mai na ginin birane, masana'antar sinadarai, aikin karafa, man fetur, magunguna, abinci, abin sha, kiyaye muhalli da sauran masana'antu.
Matsayi
1. High yi daidaitacce yanke-kashe irin. Yana za a iya amfani da duka biyu kayyade bawul da rufe-kashe bawul.
2. Nau'ikan hatimi iri biyu, daban da mahimman hanyar hatimi ta hanya ɗaya, ana iya zama tabbatacce hatta yayin da matsakaiciyar sake dawowa ko "hamma ta iska" ta auku.
3. Jikin bawul ya ɗauki fasahar yin simintin gyare-gyare tare da ƙaramin tsari, ƙarami da nauyin nauyi;
4. An karɓa tsarin sau biyu na haɗari. Lokacin rufewa, farantin bawul yana faɗaɗa waje don cimma mafi kyawun yanayin hatimin gefe; yayin buɗewa, farantin bawul din da zoben hatimi suna rabu da sauri don hana tasirin sakawar zoben. Ta wannan hanyar, karfin juzu'in aiki yana raguwa kuma an ƙara rayuwar aiki ta bawul.
5. Zoben hatimi sabon abu ne a cikin zane kuma yana ɗaukar fasahar zamani a duniya: Ptfe hatimi yana ɗaukar "leɓen haƙori" siffar tsarin hatimi kai; hatimi mai ƙarfi yana ɗaukar "U" siffar hatimi na roba. Rayuwar sabis na tsarin hatimi yana da tsayi kuma abin dogara ne. Game da yanayin hatimi mai taushi da hatimi mai tauri, yafi dogara da bukatun mai amfani, yanayin sabis da buƙatun anti-lalatawa.