Buyers must prioritize the production capacity (BPH - Bottles Per Hour) to match their market demand. Key components include the 3-in-1 monoblock system (rinsing, filling, and capping), which saves space and reduces contamination risks. Ensure the machine uses Food Grade Stainless Steel (SUS304 or SUS316L) for all contact parts to prevent corrosion and ensure hygiene. Additionally, check for PLC control systems (like Siemens or Mitsubishi) and touchscreen interfaces for precise operational management.