Halma international limited shanghai representative office .
英国豪迈国际有限公司上海代表处。
Ocean optics is part of the multinational halma group of safety and detection companies .
海洋光学是国际跨国公司英国豪迈集团下从事安全及探测研究的子公司之一。
Halma 's three divisions industrial , infrastructure and health make safety components including smoke detectors , water purification instruments and automatic door sensors .