HANGZHOU PERPETUAL MACHINERY & EQUIPMENT CO.,LTD,Website:http://www.plw-pt.com, is a professional power transmission company, producing mainly chain, sprocket, gear, bearing… The company was founded in 2000, with the name of PLW an Industrial Corporation, as part of our growth in the market, now we have our registered brand”PLW”. HANGZHOU PERPETUAL MACHINERY & EQUIPMENT CO.,LTD, is mainly in the manufacture of standard roller chains, stainless steel chains, high quality agricultural chain, conveyor chains, special chains and sprockets etc. Standard products can do under ANSI, BS, DIN, KANA. We are improving with each passing day. We look forward to the pictures and samples from all the customers. We can discuss the non-standard product's development and research. We have many professional engineers, and professional drawings provided by SOLIDWORK, AUTOCAD. If you have any questions in production selection, design and application, please feel free to contact us, we will provide the most professional and efficient service.