The first factor: is determined by the characteristics of LED lamp beads.
Enterprises in the production due to different batches of LED lamp beads have brightness, wavelength and angle of view, etc., but in order to pursue high quality, the same display generally selects the same batch of LED lamp beads. Therefore, as long as the current batch of raw materials are not exhausted will produce tail goods.
The second major factor: exhibits or samples.
Because exhibits or samples often represent the company's latest research and development level, it has a small quantity, fast update characteristics, the enterprise once the new exhibits or samples come out, these exhibits or samples have become the tail goods.
The third major factor: spare parts form the tail goods.
Whether the project or wholesale unit board, will retain a certain amount of spare lights or spare parts module. If the LED display failure rate uncertainty, spare parts may form the tail goods.
The fourth major factor: changes in customer requirements.
As some LED display projects after the signing of the contract, the enterprise in accordance with the contract procurement of raw materials and production, and once the customer changed the contract during this period, the increase or decrease in the amount of the project will produce different degrees of tail goods.
