Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement (No. 333-208188, 333-159513, 333-115713, 033-54158)

on Form S-8 of our report dated June 24, 2021, which appears in this annual report on Form 11 -K of the Quaker Houghton Retirement

Savings Plan for the year ended December 31, 2020.

/s/ Baker Tilly US, LLP

Philadelphia, Pennsylvania

June 24, 2021