Welcome to Ningbo Zhongli Bolts Manufacturing Co., Ltd., a leading supplier of head bolts and black oxide coating in China. Our company is dedicated to providing high-quality fastening solutions for various industries and applications, Our head bolts are manufactured with precision and expertise, guaranteeing reliable and strong connections for your projects. We offer a wide range of head bolt sizes and materials to meet the specific requirements of our customers. Whether you need standard or custom head bolts, we can fulfill your needs with our advanced production capabilities, In addition to high-quality head bolts, we also specialize in black oxide coating services. This process provides a durable and corrosion-resistant finish to the bolts, ensuring long-lasting performance in demanding environments. Our black oxide coating services are carried out with great attention to detail, resulting in a consistent and uniform finish on every bolt, As one of the top suppliers in China, we are committed to delivering exceptional products and services to our customers. Contact us today to learn more about our head bolt and black oxide coating capabilities
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