I got intrigued...  They've got a drop-stitch floor and Halky Roberts valves according to Boats-to-go (or is it "Boats Togo?") http://www.boatstogo.com/faq.asp)

The website (http://www.saturnrafts.com/) says this:

SATURN rafts are exceptional quality workmanship products made by a leading manufacturer of inflatable rafts in Korea. Our manufacturer is a major supplier of inflatable rafts for the Korean military, and possesses over 20 patents in 12 different countries including: double wall fabric for high-pressure air deck floors and air safety valves for inflatable rafts and boats. The quality of SATURN Inflatable Rafts has been regarded as superior to its more widely known competitors but until recently was mostly only imported to Japan, Australia, New Zealand and Europe.

SATURN inflatable rafts represent quality and durability at budget-pleasing prices. Our prices are lower because we pass on the overseas production cost savings directly to our customers. We offer our wholesale prices to all customers including outfitters, guide services and the occasional adrenaline junkie.  
  
Easy to set up, SATURN inflatable boats and rafts will take you on a fun day of exploration at bay, river or lake. Once deflated, inflatable rafts can be easily stored in the bed of your truck or trunk of your car. Deflated the rafts take the size of an over sized luggage bag and can be stored almost anywhere.

SATURN inflatable boats and rafts are hand-sealed at the seams for perfect seaming-the most expensive and reliable method used today. Each seam is strengthened with four layers of bonded fabric for maximum strength and durability. Heavy duty 1,100 Dtex High Strength PVC fabric coated on both side with 1100 g/m2, 0.9mm. Fabric is thick, puncture proof and abrasion resistant.

SATURN boats are different from other brands. Saturn Inflatable boats are made with the same quality materials as many of the more famous expensive brands of inflatable boats. The materials used for production of these rafts are the same or even better quality than most of our overpriced competiors.

SATURN boats are made with very clean, hand-made seams with a double layer of fabric at the tubes bottom.The extra thick 1100 Dtex fabric with polyester support is a much thicker fabric than some of our high-end competitors. There are several reasons why our prices are the lowest in US: We import directly from the manufacturer, bypassing the middleman. By conducting our business on-line we avoid expenses that retail stores are passing on to their customers. We do not invest as heavily in marketing as our competitors and receive the majority of our business from repeat customers and customer referrals. We don't have to maintain a large network of dealers and retail stores. Our 2 years warranty does not force you to pay for extra years that otherwise are built-in to retail prices. Many of our repeat customers are boaters that have had experience with other brand names as AIRE, Maravia, Vanguard, Hy-Side, Zodiac, Avon, West Marine, etc. and the most common remarks we hear are that our rafts are very competitive in terms of performance at 1/3 of the price.