ʻO Tianjin Leading Import & Export Co., Ltd, i hoʻokumu ʻia mai ka makahiki 1997. ʻO ka ʻoihana i ka hana ʻana a me ka hoʻokuʻu ʻana aku i nā dyestuff a me nā mea pili.Ka nui hana makahiki o3000mt Metanil melemele, Alani ʻalani II,aʻulaʻula ʻulaʻula pololei RN.ʻO kekahi o nā mea kūʻai nui oʻeleʻele BR a me nā kala Sulfurmai Kina.