|Tiberium Chemical Plant|
Grant access to Tiberium-based support powers
First, and at the greatest Tiberium cost, the Chemical Plant prepares for deployment a Tiberium vapor bomb of great destructive power; second, a liquid Tiberium charge to seed a patch over a certain small area; third, the catalyst missile can be deployed for areas in which enemy forces foolishly chose to covet Nod's beloved crystals (and also against the Tiberium-based Scrin).
A Tiberium Chemical Plant does nothing for a Nod commander other than grant a variety of support powers; it does not grant access to any type of unit or upgrade, similar to GDI's Space Command Uplink structure. As a result it is logical for a commander building one to assume that they will need to spend considerable amounts of credits to take advantage of the support powers granted by the building.
One practical reason to build a chemical plant is that it grants access to the cheap Tiberium Seed power, which can give more credits to the commander than they spent on using it.
The most prominent offensive abilities granted by the plant are the Catalyst Missile and Tiberium Vein Detonation, which do considerable damage to units containing tiberium or units near tiberium fields. This allows Nod commanders to destroy harvesters and refineries of enemy commanders easily, potentially wrecking their opponents' economies.
The Tiberium Vapor Bomb summons a bomber that moves to its target then drops the bomb. It generally has a longer delay to take effect (the bomber must fly to its target), so if its used on mobile units a commander should try and target ahead of an enemy's path to compensate. The bomber can also be shot down so it is not a viable weapon against a base reinforced with a lot of anti-air. However, the bomb has a large explosion radius and is deadly against buildings, light vehicles, and infantry. Only well-armored buildings or tanks will survive.