This is part of the Renewal of Ro expansion information. See the linked article for more details on other aspects of the expansion.

Tradeskill Quest Rewards

These are rewards for the Researchers of Ro tradeskill signature line. You are allowed to choose one of the desert crafting tables at the completion of the line, and then can purchase the rest of the set from the then-unlocked researcher merchants.

Potential Trade Goods Responsibility for Raj'Dur	Desert Curse Prevention Potion Curing the Curse	Growth Prayer Stone (3 rewarded) Renewal
Researchers Bowls Takish Time

Desert Chemistry Table Sandstone Setup option	Desert Engraved Desk Sandstone Setup option
Desert Forge Sandstone Setup option	Desert Loom Sandstone Setup option
Desert Stove and Keg Sandstone Setup option	Desert Woodworking Table Sandstone Setup option
Desert Work Bench Sandstone Setup option