AnshanCITY LITONG TRADECo., Ltd. established in 1995. And developed as professional designer, manufacturer and exporter of security products such as video intercom system, digital lock system, and digital multi-media surveillance system. Relying on imported SMT automatic production line and automatic ware-soldering assembly lines which are applicable for the manufacturer &processing of PCB board. OEM from all the companies all over the world through strict and effective test, products get international safety quality approval of CE , ISO9001-2000 and IQNET, and sold to many countries worldwide.