Jecha remhando yechisikigo rakasanganiswa nejecha rine mavara akasiyana-siyana rekuvaka
Jecha rine ruvara rwakakamurwa kuita jecha rine ruvara rwechisikigo, jecha rine ruvara rwakatsvuka, uye jecha rine ruvara rwakadhayiwa. Hunhu hwaro ndehwekuti: mavara akajeka, kuramba acid nealkali, kuramba UV, uye kusapera.
Rudzi: jecha reruvara rwechisikigo, jecha rine ruvara.
saizi: 10-20.20-40.40-80.80-120.120-180.200mesh.
Nyora meseji yako pano woitumira kwatiri
