Handan Sima Fastener Manufacturing Co. Ltd. is a Chinese company specializing in fastener production. They offer a wide range of high-quality bolts, screws, nuts, and washers made from various materials.

They also provide customized solutions, including product design, prototyping, and testing. With a well-equipped production facility and rigorous quality control procedures, Handan Sima Fastener Manufacturing Co. Ltd. is known for its excellent customer service and satisfaction.