美国采购需求：所有产品、消防、医疗、气动、救援、水肺

I'm an experienced diver looking to fully transition to high-pressure carbon fiber tanks. I'm interested in specific models but can't find details about their performance compared to standard aluminum tanks in terms of dive time and weight, which are my top priorities. Additionally, I'm unsure whether to opt for DIN fittings or stick with traditional valves. I aim to make a purchase this week, so any insights or specifications you can provide would be greatly appreciated!