DIVEX - JFD (James fisher and soons PLC) Divex is a brand of JFD group that proposes several types of helmets and full-face masks, which some of them are described in the document “description of a saturation Diving system”. These helmets are equipped with balanced Divex regulators and, when necessary, reclaim system valves are installed. This manufacturer also produces helmets that can be used to dive in polluted waters, such as the AH5, which is a continuous flow helmet (See on the left side below), and a gas reclaimed helmet specifically designed for this purpose called "Dirty Harris". JFD headquarters are situated at the following addresses in the United Kingdom: 1 - Cartside Avenue Inchinnan Business Park PA4 9RW - Inchinnan (near Glasgow) Tel: +44 (0)141 812 8700 Email: enquiries@jfdglobal.com 2 - Enterprise Drive Westhill Aberdeen AB32 6TQ Tel: +44 (0)1224 740 145 Email: enquiries@jfdglobal.com Details regarding the proposed helmets by the company are accessible via this web address: https://www.jfdglobal.com/systems/

Kirby Morgan Kirby Morgan Dive Systems, Inc.® helmets are the most used in the commercial diving industry. Based at 1430 Jason Way, Santa Maria, CA 93455, in the United States, this manufacturer takes advantage of a strong sales network. Phone: (805) 928-7772 e-mail: kmdsi@KirbyMorgan.com Website: www.KirbyMorgan.com

DRASS Drass-Galeazzi is an Italian diving system and equipment manufacturer that introduces a novel helmet model dubbed as "D- One". Its specifications can be accessed through the following link: http://www.d-one.tech/ Head office: Via Teresa Mattei, 4 57121 Livorno ITALY Tel +39 0586 421221 Email: drass.info@drass.tech

Tatum The Tatum AFS 3 is a constant free flow breathing air diving helmet equipped with noise protection from inside and outside with a damping effect of 25 dB and designed for use in contaminated environment. Website: https://www.tatum-gmbh.de/#top Address: Tatum GmbH Vinkenberg 11 59269 Beckum - Germany Tel: +2522.938994 Email: info@tatum-gmbh.de

COMPOSITE - Beat Engel (CBE) Composite - beat Engel is a company based in Switzerland designing helmets for surface-supplied diving and operations in polluted environments. These helmets conform to the highest standards, such as EN 250, EN 14293, and EN 15333. Another important fact is that this manufacturer can design and build any helmet according to specific demands. Website: https://www.composite-be.com Head office: General Dufourstr. 842502 Biel – Bienne, - Switzerland Phone: +41 (0) 32 322 46 36, / Mobile: +41 (0) 79 351 05 05