Our History

Making GT History Since 1981

Committed to Diamond Tool Technology

EHWA industrial facilitiesEHWA industrial facilities

1981

EHWA, a global innovator diamond tool manufacturer began exporting to the US.

General Tool building exteriorGeneral Tool building exterior

1984

General Tool Inc. was established in the US as the exclusive distributor of EHWA.

Industrial diamond tooling equipmentIndustrial diamond tooling equipment

1988

The EHWA Technology R&D Center and General Tool, Inc. in Irvine, California.

2010

ZENESIS placement technology was invented to exceed better consistent quality.

Stone fabrication with diamond toolsStone fabrication with diamond tools

2012

ZENESIS™ brand was established, dedicated to diamond tools for working on tile and stone

General Tool team group photoGeneral Tool team group photo

2018

General Tool Inc. celebrated its growth into a leading professional tool manufacturer in the US.

General Tool and EHWA partnership collageGeneral Tool and EHWA partnership collage

2024

Celebrating 43 years of excellence and our long-term partnership with EHWA.

EHWA 50th anniversary and diamond toolsEHWA 50th anniversary and diamond tools

2025

EHWA looks back on almost 50 years of being diamond tool product partner, and looks forward to many years of working together.

20262026

2026

General Tool’s acquisition by IMM marks an exciting new chapter, bringing together vision, resources, and expertise to drive innovation and continued growth.