Sheng Jhou had developed and manufactured any lock of keycylinder prophase. Until now, Sheng Jhou has grown to makehigh quality products and security electronic alarm systemsbecause we have strong technical knowledge and innovativedesigner. Those have international patents of design andconstruction. However, we are your best choice for need, wecan offer our standard items or OEM/ODM products. Lookingforward to your inquiry, all inquiries are welcome. We willbe pleased to answer any question or request of you andsend our further information to you. 
Taiwan