Nyob rau hauv 2007, lub Hoobkas tau tsim nyob rau hauv central cua txias kev lag luam puag. Xyoo 2012, Wucheng ZEN cleantech Co., Ltd. tau sau npe. Hauv 2019, txhawm rau teb rau txoj cai kev lag luam txawv teb chaws hauv tebchaws, sau npe ShanDong ZEN Cleantech Co., Ltd. Hauv thaj chaw dawb. Nrog rau tag nrho sau npe peev ntawm 22 lab yuan. Lub tuam txhab tau ua raws li tus ntsuj plig ntawm kev nruam ntej, nrog "zoo tshaj plaws, tus nqi zoo tshaj, kev pabcuam zoo tshaj plaws" raws li kev lag luam lub tswv yim, yeej qhov kev lees paub thiab kev qhuas ntawm cov neeg siv khoom hauv tsev thiab txawv teb chaws.