Pre-bored pre-kayan aiki

Pre-bored pre-kayan aiki

Hanyoyin da suka gabata na pre-gundura don amfani da kayan aikin da aka riga aka gabatar don yin hakowa, zurfin motsawa da kuma faɗaɗa jikin pile. Hanya ce ta tushe mai tarin abubuwa tare da nau'ikan nau'ikan nau'ikan nau'ikan karuwa na kwararar karfin gwiwa (PHC), kimanta karfin gwiwa mai karfi.

bincike bayyanin filla-filla