Double Blue Fastener Manufacturing Co., Ltd. is a professional manufacturer and supplier of expansion screws in China. Our factory is equipped with the latest technology and machinery to produce high-quality expansion screws that meet international standards. Our company specializes in producing different sizes and types of expansion screws that are effective for installation in wooden structures. Our expansion screws are designed to provide superior holding power for anchoring applications in wood, making them a top choice for builders and contractors. They provide a strong and secure hold, ensuring that your structures are safe and stable. Our expansion screws are easy to install, saving time and effort during the construction process. As a reliable supplier of expansion screws in China, we guarantee competitive prices, fast delivery, and excellent customer service. Our products are trusted by customers worldwide, and we take pride in providing our clients with the best quality products. Contact us today to place your order, and experience the reliability and efficiency of our products and services.