Shanghai Qingtu Rubber Technology Co., Ltd. is a comprehensive enterprise group engaged in the research, design, production, sales, and service of inflatable sealing rings. With 18 years of industry experience, we specialize in the research and production of inflatable sealing rings. Since its establishment, Qingtu Rubber has consistently adhered to a policy of high standards and strict requirements, from raw materials to production processes and product testing, ensuring a focused approach t...