Ibirango bya A4 bishobora guhaza ibikenewe bitandukanye mu biro, bikagabanya igihe cyo gukora imirimo yo gushyira ibimenyetso no gukora akazi ko gusura ahantu hatandukanye.
Intangiriro y'ubusabe
ikirango gishya, gihuye n'ibyo akazi gakeneye mu buryo bwemewe n'amategeko hamwe n'imiterere yacyo yihariye, kandi gitanga serivisi nziza.

Ibirango byo gupakira;
Amabwiriza y'abakoresha;
Ibikinisho;
Abana bakina katuni;

Ibiranga
umweru mwiza kandi ugororotse, kandi ishobora gucapa hakoreshejwe agatambaro iyo ikoreshejwe.
Imikorere myiza yo gutunganya, nta gusukura cyane kandi igabanya neza;
Kugira ngo huzuzwe ibisabwa mu gushyiraho ibirango, kole ikwiriye gukoreshwa mu gushyiraho ibirango n'intoki, gushyiraho ibirango mu buryo bwikora

Ibisobanuro birambuye ku bicuruzwa
W1HK1 (garama 70 za kaseti ebyiri zometseho + garama 80 za CCK y'umweru)
A1MP1 (80g impapuro zitwikiriye + 95g PEK yera)
A8100 (80g impapuro zitwikiriwe + 80g CCK yera)