Kubva pazuva rekutenga core synthetic products, unogona kunakidzwa ne-1-gore mushure-yekutengesa-sevhisi yemhando yekusimbisa, asi unofanira kutevera misimboti inotevera:
1. Kugona kuratidza kadhi redu rewaranti rinoshanda.
2. Chigadzirwa chacho hachina kuparadzaniswa, yakagadziridzwa kana kugadziriswa pachayo, uye chiratidzo cheQC chakamira.
3. Apo chigadzirwa chinoshandiswa mumamiriro ezvinhu, kune matambudziko emhando.