Longkou Hongyuan Industry & Trade Co., Ltd. is founded in 1992. Situated in Longkou City of Shandong Province, we enjoy convenient transportation. Our company has many years' manufacturing experience and strength. We can develop the satisfying necessary products for different profession customers. We can product "O" seals, regardless of the quality or the quantities. All products enjoy professional high praise and faith and we have obtained the ISO9001 certificate. At present, our products include hardware fitting, rubber products and processing rubber models. We provide all kinds of rubber mixture. All of our products are widely use in vehicles, hardware and machinery, pressure vessels and medical instruments. Our company wholeheartedly welcomes friends from all walks of life.