Paper Cup Tshuab - Ntawv khob Printing khoom

Daim ntawv khob luam ntawv ntau lawm cov ntaub ntawv:

Lub xeev tau hais tias cov khob ntawv pov tseg "tsis tuaj yeem tsim cov tshuaj fluorescent whitening". Cov khob ntawv pov tseg tau muab faib ua khob dej txias thiab khob dej kub raws li lawv siv. Thaum siv los yog siv tsis raug, nws yuav cuam tshuam rau kev noj qab haus huv ntawm lub cev. Cov khoom siv raw rau txheej txheej dej tsis zoo hauv cov khob ntawv pov tseg yog polyethylene. Cov khob ntawv tsis zoo siv cov polyethylene rov ua dua tshiab, uas yuav tsim ntau yam khoom tsim kev puas tsuaj rau tib neeg lub cev thaum ua thiab tsim khoom. Lub khob ntawv yog coated nrog ib txheej ntawm polyethylene waterproof zaj duab xis rau sab hauv kom ua tiav cov nyhuv waterproof.