I te Pipiri 18th 2001 kua rehita okawatia te kamupene.
I te Pipiri 18th 2011, i hangaia te whare wheketere me te tari.
Ruarua roera crusher tutuki tiwhikete o "Tiwhikete haumarutanga o aku hua".
I hurihia te ingoa ki "Tangshan Tianhe Environmental Protection Technology Co., Ltd. ".
Ko Tianhe Hangarau he kamupene "poari hou e toru" kua raarangi, he tohu kararehe 871037.
I tonohia mo te tiwhikete whakahiato paerewa a te Pakeha mai i te SGS.
I tono mo te tiwhikete CE me te kaweake ki te maakete Pakeha.
Ko te roopu o "Tangshan Saimu Environmental Protection Technology Co., Ltd."i rēhita ōkawatia.
I tono mo te tiwhikete EAC ka kaweake ki te maakete a Ruhia.
