Osero Sealing Technology (Shanghai) Co., Ltd. is specialized in producing mechanical seals. Our campany is located in Tinglin Industrial Disdrict. Jinshan, Shanghai with construction area of 5000 square meters, and registed with capital of 10 million. With the domestic first-class product design technology, advanced manufacturing and testing equipment, our company established a solid quality management system. In recent years, we absorbed advanced technology and theory and built a mature ...