Four Types of Ceiling Tiles. There are four broad types of ceiling tiles - acoustical, plastic, tin and cork. Within those categories there is a further break down of tiles by design, installation and use. Acoustical ceiling tiles are used to help soundproof a room.
Lean manufacturing is a process improvement methodology based upon the highly acclaimed Toyota Production System (TPS). The main focus in lean manufacturing is the removal of waste from a value stream. Waste in this instance is defined as anything that consumes resource but does not add value for the customer.
Lean is definitely a quality methodology. The diagram helps me differentiate between Lean and Six Sigma even though there are a lot of crossovers. Lean focuses on efficiency, and components of efficiency include speed, optimized resource consumption, and defect reduction.