Provedor profesional de material de grafito, grafito para EV, graxa, fornos e calquera outra industria.

“Ouro Negro”- Material de grafito artificial
Que é o grafito? Graphite is an allotrope of carbon, a grayish-black, opaque solid. It is chemically stable, corrosion-resistant, and does not readily react with acids or alkalis. It is classified into natural…
























































































