1. Check the packaging. Genuine products usually come in high-quality outer packaging. The materials used are premium, with clear and vibrant printing on the surface. The design is professional, and even the smallest text is legible without any blurring or distortion. If it's a cardboard box, the graphics and text are well-printed, and you'll find details like the product name, model number, quantity, quality inspector code (seal), location, and contact information. Some genuine parts also feature security labels or holograms to ensure authenticity.
2. Examine the seal. Genuine parts are typically sealed properly, ensuring protection against moisture, water, and rust. This helps maintain their condition during storage and transport, preventing any damage that could affect performance.
3. Check the fit. Genuine parts usually have a slight gap, but not too loose. For precision components, the gap is very small—around 0.002 to 0.003 mm. For example, when checking a plunger couple, you can manually block all the holes in the sleeve and tilt it at 45 degrees. Pushing up one-third of the plunger should allow it to retract automatically after releasing—this indicates a good fit. For bearings, there should be a minimal clearance, allowing smooth rotation without sticking. The balls inside should be smooth, free from dents or imperfections.
4. Compare the quality. Genuine products are made from high-quality materials, with no shortcuts taken in manufacturing. They are durable and reliable. On the other hand, counterfeit parts often use inferior materials, leading to poor performance and shorter lifespan. Always look for consistency in craftsmanship and attention to detail when evaluating quality.
By carefully examining these aspects, you can better identify genuine parts and avoid purchasing fake or substandard products. It's always a good idea to buy from trusted suppliers and verify the authenticity through official channels if possible.
Moisturizing refers to the moisturizing of the skin. The process of using skincare products with corresponding effects to moisturize the skin, prevent skin moisture evaporation, improve microcirculation, and enhance skin moisture is called moisturizing. The best moisturizing is the benign interaction between the skin and moisturizing products.
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