Changshu SiTong Cartridge heater Co., Ltd. is a Sino-Korean joint venture which was founded in 1997 with total assets of USD 0. 5 millions. We have received the certificate of ISO / 9001 successively and many types of our products have also been approved by CE with ROHS compliant. High Quality Cartridge Heaters at great prices. All our product are engineered and manufactured to the highest quality. This allows us to have a justification and pay back of just a few months. Give us a try you'll be happy you did. To request a quote please contact: PLS Remember our Website: cartridge-heater. cncartridgeheater. cn