Sure! Here’s a refined version of the passage you provided: “As an expert in PCBs, I recommend refining the following: Currently, PCB production quotes are typically provided by factory engineers. However, with advancements in Internet technology, many board factories now offer online pricing platforms. Yet, due to the early stage of e-commerce in manufacturing, online quotes are limited to simpler designs. The complexity of PCB quotes stems from key factors: 1. PCB area (size) – Larger volumes per board result in lower prices. 2. Base material – Special requirements may affect pricing; for instance, Rogers material for RF costs more. 3. Board layers – More layers exponentially increase costs. 4. Production cycle – Expedited services are available at higher costs. 5. Special processes – Additional costs may arise for non-standard operations. 6. Additional considerations – Various factors like board thickness and testing influence pricing. Many manufacturers now offer automated ordering systems online, streamlining the process.” I hope this helps! Let me know if you need further assistance.