Yashi yumbu (wanda kuma ake kira yashi lu'u-lu'u, yashi mai tushe, yashi ceramsite, yashi brazing) wani nau'in kayan inorganic ne na wucin gadi tare da juriya mai zafi, ƙarancin haɓakar thermal da siffar siffar da aka samu ta hanyar fesa magani na babban kayan albarkatun alumina (aluminum yumbu) abu.An yi amfani da shi don jefa ɗanyen yashi, ya fi yashi chromite da yashi zircon dangane da aikin farashi.Yana inganta ingancin simintin gyare-gyare, yana rage farashin masana'antar kafewa, kuma yana buɗe hanya mai inganci don rage ƙazanta.Yana da kyakkyawan yashi mai tushe kuma an yi amfani dashi a cikin 'yan shekarun nan.Batar da simintin kumfa, daidaitaccen simintin gyare-gyare, ƙwanƙolin akwatin zafi da sanyi, da sauransu, suna da kyakkyawan yanayin ci gaba.

A cikin 2020, kasuwar yumburan yumbu (simintin simintin gyaran fuska) na duniya ana kimanta dalar Amurka miliyan 176.9 kuma ana tsammanin ya kai dalar Amurka miliyan 226 a ƙarshen 2026, tare da haɓakar haɓakar shekara-shekara na 3.6% yayin 2021-2026.
(Wannan shine sabon samfurin mu. Wannan rahoton kuma yayi nazarin tasirin COVID-19 akan yashin yumbu (don simintin) kasuwa, da sabunta shi dangane da halin da ake ciki yanzu (musamman hasashen))
Rahoton ya mayar da hankali kan girma da ƙimar yashi yumbu (an yi amfani da shi don simintin gyare-gyare) a matakan duniya, yanki da kamfanoni.Daga hangen nesa na duniya, rahoton yana wakiltar girman kasuwar yumbura gabaɗaya (don ganowa) ta hanyar nazarin bayanan tarihi da kuma abubuwan da za su faru nan gaba.Dangane da yankuna, wannan rahoto ya mayar da hankali kan mahimman yankuna da yawa: Arewacin Amurka, Turai, China da Japan.
Rahotannin bincike sun haɗa da ƙayyadaddun lalacewa ta nau'i da manufa.Wannan binciken yana ba da bayani game da tallace-tallace da kudaden shiga don tarihin tarihi da tsinkaya daga 2015 zuwa 2026. Fahimtar sassan kasuwa yana taimakawa wajen ƙayyade mahimmancin abubuwa daban-daban waɗanda ke ba da gudummawa ga ci gaban kasuwa.
Wannan sashe na rahoton ya bayyana manyan masana'antun a kasuwa.Zai iya taimaka wa masu karatu su fahimci dabaru da haɗin gwiwar 'yan wasan da ke mai da hankali kan gasar kasuwa.Cikakken rahoton yana nazarin kasuwa daga hangen nesa.Masu karatu za su iya gane sawun masana'anta ta hanyar fahimtar kudaden shiga na duniya na masana'anta, farashin masana'anta, da tallace-tallacen masana'anta a lokacin hasashen daga 2015 zuwa 2019. Manyan kamfanonin da aka gabatar a cikin wannan rahoton sune CARBO Ceramics, Itochu Ceratech, Kailin Casting Materials, King Sabbin Kayayyakin Kong, Kayayyakin Simintin Ƙiangxin, Sabbin Kayayyakin Jure Zinare, CMP, da sauransu.
Ana nazarin yashin yumbu (don simintin gyare-gyare), kuma ana ba da bayanin girman kasuwa ta yanki (ƙasa).Rahoton ya ƙunshi girman kasuwa ta ƙasa da yanki na lokacin 2015-2026.Hakanan ya haɗa da girman kasuwa da tallace-tallace da hasashen kudaden shiga don lokacin 2015-2026 wanda aka rushe ta nau'in da aikace-aikace.
3.1 Yashi yumbu na duniya (siminti) bita yanayin kasuwa ta yanki: 2015-2020
3.2 Yashi yumbu na duniya (simintin simintin gyaran fuska) yanayin kasuwar kudaden shiga ta yanki: 2015-2020
4.4 Duniya yumbu yashi (simintin gyare-gyare) rabon kasuwa (2015-2020) ta matakin farashi: ƙananan ƙarshen, tsakiyar-ƙarshen da babban ƙarshen.