Transformers and modulators for corona, gas flame or free-jet corona treatment of surfaces; electric devices and apparatus for treating, activating, deburring and increasing the wettability or improving the adhesion of surfaces and surface coating materials, in particular high-frequency treatment devices; electrical equipment and apparatus for testing of surface tension; electricity transformers; electrodes, high-voltage electrodes; modulators, frequency modulators.

CHEMICAL USED IN CONJUNCTION WITH THE DRILLING, CLEANING, OR TREATMENT OF OIL AND GAS WELLS, SPECIFICALLY WATER-IN-OIL EMULSION BREAKERS AND OIL-IN-WATER EMULSION BREAKERS