Chiyambireni kuti malondawo ayambe kugwiritsidwa ntchito ku China mu 2000, kufunikira kwake kwa msika kwakula kwambiri. Mu 2009, kugwiritsidwa ntchito kwapachaka pamsika wa zomangamanga kupitilira 80 miliyoni. Chifukwa cha kuchuluka kwa zinthu zofunika pakumanga komanso kulimbikitsa mphamvu-zopulumutsa ndi kugwiritsa ntchito mphamvu-zochepetsa nyumba, kugwiritsa ntchito zinthu zamtunduwu kupitilira kukula m'tsogolomu.
Opanga zinthu zapakhomo adziwa bwino njira ndi luso la kupanga zinthu zamtunduwu, ndipo nthawi zambiri amagwiritsa ntchito-ozone-yochotsa thovu la fluorinated. Apanganso-zinthu zotulutsa thovu. Kupatula opanga ena omwe akugwiritsabe ntchito zopangira ma valve ochokera kunja, zida zina zothandizira zidapangidwa m'nyumba.
Ndemanga:
Pre-kutulutsa thovu kumatanthauza kuti 80% ya thovu la polyurethane lachita kale thovu litapopera, ndipo thovu lotsatira limakhala laling'ono kwambiri. Izi zimathandiza ogwira ntchito kuwongolera mphamvu mosavuta akamagwiritsa ntchito mfuti ya thovu, kuti ikhale yosavuta, yosavuta, komanso popanda kuwononga guluu. Pambuyo-kutulutsa thovu kumatanthauza kuti guluuyo amachulukira pang'onopang'ono atapopera, kukhuthala kangapo kusiyana ndi pamene ankapoperapo poyamba. Izi zimapangitsa kuti zikhale zovuta kwa ogwira ntchito kuwongolera mphamvu pokoka chowombera, kuwononga guluu mosavuta, osachepera 1/3 yake. Kuphatikiza apo, positi-glue wowonjezedwa, atachiritsidwa, amatha kuwononga zitseko ndi mazenera mosavuta, monga guluu wamba pamsika.