1. Yenziwe ngentsimbi ekumgangatho ophezulu
2. Ukuhambelana 0.025mm/100mm, isikweri 0.025mm
3. Isetyenziswa ngokubanzi kumatshini wokungqusha, wokucwangcisa kunye nokugrumba izixhobo ekwenzeni ezinye iintlobo zeendawo zokubeka, imingxuma kunye nobuso.