Shmuel Wolk

Ham-Let (Israel-Canada) Ltd. engages in the manufacture and marketing of pipe fittings, connectors, faucets, and valves. It operates through the following segments: Products for Process Industry, Ultra-Clean Products, and Flow Control Products. The Products for Process Industry segment engages in the development, manufacture, marketing, and sale of connectors, taps and valves for command, control, and industrial transmission systems, and in the development, design, and manufacture of sensors integration systems and industrial internet of things systems. The Ultra-Clean Products segment engages in the development, manufacture, marketing, and sale of connectors, taps, and valves for ultra-pure gas transportation systems. The Flow Control Products segment engages in the development, manufacture, marketing, and sale of process faucets, control faucets, and connectors for the transmission of liquids and gases. The company was founded by Zvi Topaz in 1950 and is headquartered in Nof HaGalil, Israel.

Oxygen & Argon Works Ltd. engages in the production and marketing of industrial gases. Its products include greenhouse air oxygen, nitrogen, argon, acetylene, compressed air, gas mixtures, specialty gases, and liquid helium. The company was founded in 1960 and is headquartered in Caesarea, Israel.

Delek San Recycling Ltd. provides environmental and industrial wastewater services. The company was founded in 2013 and is headquartered in Haifa, Israel.