Please submit sites concerning consulting (the practice of) Chemical Engineering as the primary business.Chemical Engineering is a subset of the regulated profession of Engineering.
The DMOZ search feature will help locate the appropriate category.
Businesses selling chemicals, additives, lubricants, and similar products should list under the appropriate category under Business. Businesses selling software or other tools for engineering might try Science: Technology. Those involved in non-engineering consulting services for businesses will find appropriate categories under Business.