The zvinhu ukobvu ndiko 0.8-1.0mm, 1.0-1.2mm, 1.2-1.5mm. Imwe neimwe ukobvu siyana muchina mumwe. Torrist chimiro, rimwe divi rinogona kufamba uye kugadzirisa hupamhi
1.Yingyee ane mainjiniya ane ruzivo anoziva nzira yekugadzirisa nekuisa uye dzimwe nyaya.
2.Supply electric drawing, PLC inogadzirisa mutungamiri uye vhidhiyo, kupa roller kugadzirisa- mutungamiri vhidhiyo; govera kudhirowa kwema rollers kana zvichidikanwa.