1. Zam lub teeb
UV number case fwj yog cov xim dub, thiab kom tsis txhob muaj lub teeb, yog li tus number case yuav tsum tau muab tso rau hauv qhov chaw txias, rov qab, ntim rau hauv cov thawv lossis lwm cov thawv ntim khoom, thiab khaws cia cais kom tsis txhob muaj cov khib nyiab pov tseg, uas yuav ua rau muaj kev puas tsuaj vim kev rov qab los.
2. Kev sib khi
Tom qab ntawd tus number case ntawm lub tshuab luam ntawv cylindrical yuav tsum muab kaw thiab khaws cia. Ink muaj pes tsawg leeg yog tshwj xeeb thiab volatile. Tus cwj mem uas tsis tau siv lossis tus cwj mem uas tsis siv ib ntus yuav tsum nruj lub hau lub raj mis thiab khaws cia rau hauv ib qho chaw kaw. Ua tib zoo saib xyuas kom tsis txhob cia cov plua plav thiab cov khib nyiab hauv huab cua poob rau hauv lub raj mis. Yog hais tias lub nozzle puas los ntawm tus number case nrog cov khib nyiab, qhov poob yuav loj heev.
3. Kev tso chaw
Tus number case yog khaus rau qee yam, yog li tus number case yuav tsum tsis txhob muab tso rau hauv qhov chaw pom tseeb kom tsis txhob muaj kev sib cuag los ntawm cov neeg ua haujlwm tsis yog neeg ua haujlwm, tshwj xeeb tshaj yog menyuam yaus. Yog tias koj tau txais tus cwj mem ntawm koj lub qhov muag lossis tawv nqaij, ntxuav tam sim ntawd nrog dej huv. Yog tias nws hnyav dua, Yog tias tus neeg mob tau mus pw hauv tsev kho mob tam sim ntawd, kev cia ntawm UV number case yog qhov tseem ceeb heev, tab sis tus number case muaj qee yam lifespan thiab tsis pom zoo rau kev khaws cia ntev. Yog li ntawd, thaum lub sij hawm tsim khoom, koj yuav tsum tau yuav lub raj mis lub tshuab luam ntawv number case kom tsim nyog raws li koj qhov ntim ntau lawm, thiab siv nws sai li sai tau, yog li koj yuav tsis ntsib cov teeb meem no.
