HANGZHOU PERPETUAL MACHINERY & EQUIPMENT CO,. LTD,  was founded in 2000,specialized in manufacture chain and sprocket with ISO, DIN, ETC.

We have many professional engineers and professional drawings provided by SOLIDWORK, AUTOCAD, both 3D and 2D. If you have any questions in production, design and application, please feel free to contact us, we will provide the most professional and efficient service.