Buyers must prioritize motor technology, specifically choosing between BLDC (Brushless Direct Current) motors for energy efficiency and low noise, or traditional universal motors for budget-friendly lines. Key performance metrics include Energy Efficiency Ratings (e.g., Grade 1 or A+++), Spin Speed (ranging from 800 to 1400 RPM), and Drum Material, where 304-grade stainless steel is the industry standard for durability and hygiene. Additionally, verify the washing capacity (kg) accuracy to ensure it meets your target market's household needs.