Pulogalamu Yowunika Ubwino wa Pipe yachitsulo
Kuzindikira kukula, kusanthula kapangidwe ka Chemical, Kuyesa kosawononga, Kuyesa kwathupi ndi mankhwala, kusanthula kwa Metallographic, kuyesa njira.

Kuyeza m'mimba mwake

Kuyeza kutalika

Kuyeza makulidwe
