TK formulators

Serving the San Joaquin Valley

High quality formulation and packaging services for companies marketing crop protection products in the San Joaquin Valley of Central California and surrounding areas are the specialties of our TK Formulators business unit in Fresno, California.



A Leader in Sulfur Recovery

TKI is a leader in the sulfur recovery and processing business, providing a complete range of design, construction, financing and operations services for our own and clients’ refinery locations.


Wastewater Management

Safe and Environmentally-friendly

TKI is a leading manufacturer of process chemicals for wastewater applications, including safe and environmentally-friendly products for purifying municipal drinking water supplies.


Plant Design and Build

Engineering and Construction Services

Tessenderlo Kerley Services (TKS) is an in-house engineering and construction group serving TKI and third party customers in the mining, refining, gas processing, petrochemical and chemical industries from its location in Carlsbad, New Mexico.