Yueqing Sanfeng Transmission Co., Ltd is founded in the early 80’s of the last century, we have more than 20-year experience for making cross-shaft universal coupling and drum coupling. Recent years, we developed and produced the drum gear coupling. After many years research, development, and improvement, we have two patents for SWF cross-shaft universal coupling and WZL drum coupling, and our company has passed the ISO9001 Quality Management System Certification. We have long-term cooperative relationship with major crane companies, heavy-industry equipment manufacturing enterprises and steel companies. Our products are widely used in the Three Gorges Project, the Qingshan Nuclear Power Station, Baosteel, Angang, Shougang, WISCO, Shandong Iron and Steel, Hebei Iron and Steel, Masteel and other major companies (see Sales performance table). Compared with similar products at same high-level, our performance and price ratio has great advantages, and the performance and quality of the products are well received by users.