Siv cov cwj mem oily (cherry blossoms), thiab txhua zaus koj kos duab, yog tias koj nyuam qhuav ua tiav cov kab ntawv, siv cov cim oily, vim tias nws yog oily tag nrho, yog li nws yooj yim siv. Tshwj tsis yog tias koj rov ua dua nws hmo tom ntej. Raws li kuv qhov kev paub dhau los, koj tuaj yeem pleev xim rau sab nraub qaum ntawm daim ntawv sulfuric acid, lossis siv qee cov nyiaj mus rau lub khw luam ntawv loj, thiab lub khw yuav muaj lub tshuab uas tuaj yeem ua tau ntau yam, xws li luam ntawv thiab luam ntawv. Koj tuaj yeem muab koj cov kab kos rau nws, qhia nws tias koj xav ua ib daim qauv, thiab nws yuav muab koj daim duab tso rau hauv lub tshuab, thiab nws yuav ua tau zoo hauv 20 vib nas this. Lub tshuab ntawd tuaj yeem luam tawm daim ntawv qhia me me, thiab nws tuaj yeem luam tawm ntawm daim ntawv sulfuric acid, thiab tus nqi pheej yig heev. A4 yog 15 yuan, A1 yog 12 yuan.
Koj tuaj yeem siv lub cim cim uas yuav tsis ua rau cov kab ntawv luam tawm, uas yog cov roj -raws li cov cim ntawm cov cawv cawv. Qhov thib ob, sim kom tsis txhob rov hais dua cov kab ntawm kab thaum kos duab, thiaj li tsis ua rau daim ntawv puas. Tom qab pleev xim rau, yuav tsum muaj qee lub sijhawm ziab, tsis txhob kov nws nrog koj txhais tes.
Generally, large professional landscape companies do this to prevent line drafts from being spent by markers. Some people like to color the reverse side of the sulfuric acid paper. There are several kinds of sulfuric acid paper on the market. One of them looks the same as the high-quality one.
