Longnan Zhongcheng Electronic Technology Co., Ltd. Is a professional manufacturer of dialswitch, electronic components, DIP switch, patch switch, keyboard switch and other products. The company has advanced manufacturing equipment, testing equipment and monitoringmethods, so that we can better control and ensure product quality, provide more favorableprices and punctual delivery to customers. At the same time, our company can also customizeproducts with special specifications according to customer requirements. The qualitymanagement system of ISO 9001: 2008 has been implemented. In order to ensure the quality ofproducts, all the raw materials we used are imported materials with environmental protectionand high temperature resistance. After that, the production process has been completed in ourown factory. All our products have passed the SGS and RoHS/REACH tests, which conform to theEU environmental protection index. Requirements. Longnan Zhongcheng Electronic Technology Co., Ltd. Is recognized by the industry for itsintegrity, strength and product quality. Welcome friends from all walks of life to visit, guide andnegotiate business.