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.
Toyota's view is that the main method of lean is not the tools, but the reduction of three types of waste: muda (non-value-adding work), muri (overburden), and mura (unevenness), to expose problems systematically and to use the tools where the ideal cannot be achieved.ean principles are derived from the Japanese manufacturing industry. The term was first coined by John Krafcik in his 1988 article, Triumph of the Lean Production System, based on his master's thesis at the MIT Sloan School of Management.