Who is liquid line llc? Liquid Line LLC started operations in 2018 as an independent and dedicated service provider to the Isotank industry. Building on over 15 years of experience in the field of Isotank transport and management, Liquid Line LLC is a unique example in its kind.Is liquidline any good? Always has itenms in stock and everything arrives on time. Have used Liquidline thanks to our previous company being so awful at response times and no shows. Liquidline have a good response time and basically do what they say they are going to do. No problems as yet 2 years in..How did liquidliquidline support bbs with branded coffee? Liquidline supported BBS through a number of coffee tasting sessions and product trials in branches to test the new concept that we had created. This was to offer an branded coffee in a 12oz takeaway cup that they could sell at a very acceptable price.