Madzi apampopi amakhala ndi zonyansa zambiri ndi litsiro ndipo ndikosavuta kuyambitsa kutsekeka mkati mwa njira yamadzi yozunguliranso madzi oziziritsa kukhosi omwe amaziziritsa chakumwa chakumwa cha laser cholemba makina, kotero sichikunenedwa. Pofuna kupewa kutsekeka, kugwiritsa ntchito madzi oyeretsedwa kapena madzi oyeretsedwa abwino kungakhale njira yabwino. Kuonjezera apo, akulangizidwa kusintha madzi pafupipafupi kuti madzi ozungulira azikhala oyera.
Pankhani yopanga, S&A Teyu adayika zida zopangira yuan yopitilira miliyoni imodzi, kuwonetsetsa kuti njira zingapo zimachokera kuzinthu zazikuluzikulu (condenser) za mafakitale oziziritsa kukhosi mpaka kuwotcherera kwachitsulo; ponena za mayendedwe, S&A Teyu yakhazikitsa malo osungiramo katundu m'mizinda ikuluikulu ya China, atachepetsa kwambiri kuwonongeka chifukwa cha mayendedwe akutali a katunduyo, komanso kuwongolera magwiridwe antchito; pankhani ya pambuyo-malonda utumiki, nthawi chitsimikizo ndi zaka ziwiri.
