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2. Quality Assurance OEM parts are typically produced under strict quality control standards. Manufacturers invest significant resources to ensure that their components meet certain performance criteria. By choosing OEM spark plugs, you are often getting a product that has undergone rigorous testing and meets the specific tolerances and specifications required by your vehicle.

Chinese manufacturers have carved a niche for themselves by offering high-quality stamping parts at competitive prices. This is facilitated by a combination of scalability, technological advances, and expertise in supply chain management. The ability to produce large volumes while maintaining quality has made Chinese stamping parts an attractive option for many global brands looking to reduce costs without compromising on quality.