1) material library used to store no special storage conditions required materials such as foil covered board, drilling pads and so on. pcb asssembly 2) libraries of chemicals should be stored under specified environmental conditions, chemicals, different types of technical requirements for classification of chemicals should be stored.
3) cold storage used to store some of the sensitive materials to environmental conditions, especially those placed with limited life materials, such as the B-stage adhesive film, photographic film, thermal printing photosensitive material, dry film, film paper. pcba manufacturer
4) The new material before it, without the relevant acceptance, acceptance of the material should have been kept separate. Has been general acceptance of the material should be based on the principle of first in first out distribution. Warehouse management with particular attention to those who manage a limited shelf life materials,pcb assembly China such as the validity period has passed, re-inspection by the Quality Assurance department, issued only after the confirmation of qualified use, otherwise clear from the library scrapped.