1.?????? BASF SE
2.?????? Eastman Chemical Company
3.?????? Huntsman Corporation
4.?????? Air Products and Chemicals
5.?????? Alkyl Amines Chemical Ltd.
6.?????? Huntsman International LLC
7.?????? Merck KGaA
8.?????? Haihang Industry Co.
9.?? Air Products and Chemicals
10.?? Solvay SA