Take enough time to present a complete list of classified materials (BOM). Effective BOM should include all basic elements such as reference mark, part number, description, quality, SMT method, manufacturer name, floor area, packaging, and BOM level. The most important thing is to add component replacement elements to BOM. Because technology is developing faster and new elements need to be replaced immediately to match competitive market trends. We have rich experience in the component suggestions of replacement elements to BOM.