Training Sertifikasi Pemboran (DRILLING) Operator, Juru, Pengendali
TRAINING SERTIFIKASI PEMBORAN (DRILLING) OPERATOR LANTAI BOR (OLB), OPERATOR MENARA BOR (OMB) JURU BOR (JB) DAN AHLI PENGENDALI BOR (AP)III […]
info Training Sertifikasi Pemboran (DRILLING) Operator Lantai Bor (OLB)