I ka makahiki 2007, ua hoʻokumu ʻia ka hale hana ma ke kikowaena ʻoihana ea ea. Ma 2012, Wucheng ZEN cleantech Co., Ltd. ua kakauinoa. I ka makahiki 2019, i mea e pane ai i ke kulekele kalepa o nā ʻāina ʻē, ua hoʻopaʻa inoa ʻo ShanDong ZEN Cleantech Co., Ltd. Ma ka ʻāpana manuahi. Me ka huina nui o 22 miliona yuan. Ke hoʻomau nei ka ʻoihana i ka ʻuhane o ka hoʻomau mau ʻana, me ka "maikaʻi maikaʻi loa, ke kumu kūʻai maikaʻi loa, ka lawelawe ʻoi aku ka maikaʻi" e like me ka ʻoihana ʻoihana, lanakila i ka mahalo nui a mahalo nui ʻia e nā mea kūʻai aku a me nā haole.