Dear Sir Madam, I'm looking for products with the following specifications: Medical Liquid Oxygen (99.5%) in stainless steel cylinders with vacuum and insulated. DLC 30 (10 500m3), DLC 31 (12 750m3), DLC 41 (18 360m3), DLC 45 (18 600m3), DLC 200 (16 500m3).