Dalian Chinese Textile Machinery Technology Development Co., Ltd ( hereafter referred to as DLZFJ ) is one of the leading Chinese manufacturers of main and relay solenoid valves for weft insertion systems in air-jet looms. DLZFJ is renowned for its high quality products and excellent services within the Chinese textile machinery industry. In 2002 DLZFJ was awarded the ISO9001 accreditation for its quality management system.