hat
Gen twa kalite pyès machin dyaman ki kouvri l ' tankou piba: dyaman kouvri PDC anchor sèvi ak machin moso, dyaman kouvri PDC ki pa-coring sèvi ak machin moso ak diaman kouvri PDC coring èch. Twa kalite pwodwi fè tou sa ki te pase zòn enspèksyon teknolojik Depatman sipèvizyon ak enspèksyon yo e li te jwenn sètifika patant nasyonal.
eng
There are three kinds of diamond-plated drill bits as follows: diamond-plated PDC anchor drill bit, diamond-plated PDC non-coring drill bit and diamond-plated PDC coring drill bit. The three kinds of product have all passed inspection of technological supervision and inspection department and obtained national patent certificate.