Malenzi ePC, general resin lenses zvinhu zvekuisa thermosetting, kureva kuti, iyo mbishi ndeyemvura, inopisa kuti igadzire ma lenzi akasimba. PC piece inonziwo "space piece", "space piece", zita remakemikari inonzi polycarbonate mafuta, is thermoplastic material. Ndiko kuti, iyo mbishi yakasimba, inopisa mushure mekuumbwa kuita lenzi, saka iyi lenzi ichave yakawedzera kupisa mushure mekunge chigadzirwa chapedzwa chave chakaremara, chisingakodzere kunyorova kwepamusoro uye nguva dzekupisa.
PC lens ine kusimba kwakasimba, isina kutyoka (2cm inogona kushandiswa kune bulletproof girazi), saka inonziwo kuchengetedza lens. Iyo chaiyo giravhiti ingori magiramu maviri pacubic centimita, zvichiita kuti ive chinhu chakareruka pari zvino chinoshandiswa kumalenzi.