As a leading manufacturer of mechanical seals and sealing productsin China, Sino-Holding Co., Ltd, with over two hundred staff, inour three factories, are specialized in designing, manufacturingand marketing mechanical seals and sealing products. Founded in1999, SH continue to rapidly grow through our exceptionalinvestments and design development, headquartered in Beijing, havethree modern factories in ZheJiang Province. Through constantdevelopment of more than 10 years, We have formed the four mainproducts lines, being: