Shenhai Kuputika-Uchapupu
Maererano neNational Mine Product Safety Mark Center, zvigadzirwa zvakawana chiratidzo chekuchengetedza zvinodikanwa kuti zvigadziriswe pakupera kwenguva yazvo yechokwadi.
Kutadza kuvandudza chitupa chechigadzirwa kunoguma nekusashanda kwayo otomatiki. Somugumisiro, zvigadzirwa zvemigodhi zvine mavara ekuchengetedza marasha akapera hazvibvumidzwe kushandiswa.
Zvakakoshawo kuziva kuti chitupa chekuchengetedza marasha rinowanzodudzirwa sekutsanangura kodzero dzekugadzira uye nguva inopihwa mugadziri, pane kudoma kodzero dzekushandisa dzekupedzisira-mushandisi mushure mekutenga. (Nokuda kwemitemo yakazara, zvinokurudzirwa kubvunza yemuno Mechanical uye Electrical Sayenzi Dhipatimendi.)