Kupanga kozizira kojambula mafuta a petroleum kutha kukhala kozizira, kukokedwa, kuzizira, kupanga kusakaniza kozizira. Pogwiritsa ntchito zojambulazo, zida zosavuta, ndalama zochepa, ntchito yosavuta ndi kukonza ndi zina zotero. Koma drawback ndi sitepe yapakati ambiri, mitengo matabwa. Kugwiritsa ntchito cold process equ...
Werengani zambiri