What is Foundation-free mixing plant?

A foundation-free mixing plant (also known as a foundation-less concrete batching plant) is a modularized, portable industrial facility used to produce concrete without the need for traditional deep, reinforced concrete foundations. 
Instead of digging pits and casting permanent concrete columns, these plants utilize an integrated all-steel structural frame as a base. 
Key Characteristics and Advantages
Rapid Deployment: Can be installed and ready for production in as little as 72 hours, saving over 30 days of construction time compared to stationary plants.
Reduced Costs: Lowers civil construction costs by 30%–50% because it eliminates the need for expensive reinforced concrete groundwork.
High Mobility: Designed for easy disassembly and relocation, making it ideal for temporary or short-term projects such as roads, bridges, and tunnels.
Minimal Site Requirements: It can be placed on any hard, flat, and dry ground (such as compacted earth or a simple hardened concrete floor).
Modular Design: Components like the mixer, batching machine, and control room are pre-assembled as modules for quick "plug-and-play" installation. 
Core Components
Mixing System: Usually features a twin-shaft forced mixer for high-efficiency blending.
Aggregate Batching: Includes PLD series machines for precise weighing of sand and stone.
Storage & Delivery: Utilizes cement silos with steel bases and screw conveyors to transport powders.
Control System: Automated computer systems manage the entire production process from a central room.