The first big factor: is determined by the characteristics of LED lamp beads.
Enterprises in the production of different batches of LED lamp beads with brightness, wavelength and viewing angle differences, but in pursuit of high quality, the same piece of display generally use the same batch of LED lamp beads. Therefore, as long as the current batch of raw materials is not used up will produce Weihuo.
The second biggest factor: exhibits or samples.
Since the exhibits or samples often represent the company's latest research and development level, it has the characteristics of small quantity, fast update, and once the new exhibits or samples come out, the exhibits or samples become the tailings.
The third largest factor: the spare parts to form Weihuo.
Whether it is a project or a wholesale cell board, a certain amount of spare lamp or spare module will be retained. If LED display failure rate of uncertainty, spare parts may form Weihuo.
Fourth factor: changes in customer needs.
Because some LED display projects after the signing of the contract, the company purchased the raw materials according to the contract and production, and once the customer changes the contract during this period, the increase or decrease in the amount of the project will have different levels of Weihuo.
Fifth largest factor: customer returns.
Some LED display project installation is complete, may be due to quality problems, did not meet customer requirements, there will be a return situation, the returned LED display often have to be recycled, which inevitably also will produce Weihuo.