These type of labels could imply that they might contain corn syrup, sugars, pH balancers, stabilizers and other stuff because Orange juice can be defined to contain other stuff:
100% Orange juice
100% made from Florida Orange Juice
Made from 100% Orange juice

Of course, whether they are made in Brazil, Florida, or Australia, and if they define an Orange juice to contain corn syrup, sugars, and other additives, they are indeed 100% orange juice.

But this label should imply that what you get is pure from oranges without any adulterants like water, sugars, pH balancers, stabilizers.
100% made from citrus oranges

Citrus Fact #8. - Commercial growers in Kern County, California regularly get upwards of 900 oranges from a single tree.

The Kern County is probably the only county where it requires phtyosanitary permits to move citruses and citrus plant parts from other places of California. You can freely move citrus from one place of California to another, except when crossing borders of Kern County.

From Kern County web page:

....."The backyard citrus grower does need to be aware that it is currently illegal to import citrus trees, budwood, or other parts of citrus trees into Kern County from areas outside the Central Valley and the interior desert areas of California. Kern County citrus is free of many of the disease and insect pests found elsewhere in the sate".............

Citrus Fact #9 - The global trade in FRESH citrus fruit is about 10 million tons per year.

Citrus Fact #10 - Currently 59,600,000 citrus trees are planted in Florida. Down 38,000 trees from last year's total due to disease and land developers.

Citrus Fact #11 - In 2002, facing an outbreak of citrus canker in Florida, Governor Jeb Bush made an executive decision to destroy diseased trees. Thus, 1.5 million trees in commercial groves were sacrificed. In addition - you can imagine the outcry - another 603,000 trees were destroyed in the backyards of about 250,000 homeowners.

Most of the backyard growers or home owners were never compensated. It was a valiant, expensive but futile effort against citrus canker. The USDA gave up on it after a series of hurricanes and other calamities. I've read that there is a lawsuit going on to force the state to give compensation to the home owners for their lost citruses.

Yes there is a class action law suite against the State of Florida to obtain the promised payment (promised but never paid) for the destruction of the home owners citrus trees. For those interested here is the entire story of the law suit. http://www.palmbeachpost.com/business/content/business/epaper/2007/10/14/a1f_cankersuit_1014.html

Citrus Fact #12 - The relative amounts of Orange juice drunk in the United states : 267.7 million gallons of Frozen Concentrated Orange Juice (FCOJ), 661.4 million gallons of reconstituted chilled juice, and 629.9 million gallons of Not-From-Concentrate (NFC) juice. Americans drink an average of 5.7 gallons of Orange juice per year.