Shenzhen HRD Science & Technology Co., Ltd. is a large high professional UPS manufacturer,with ISO 9001:2008 and ISO 14001:2004 certified. from Shenzhen China . HRD UPS is committed to providing highest quality products and thoughtful services to meet middle and high-end customers' requirements. Based on the most advanced and the stalest technique guarantee system, HRD provides the following products and custom made product for global customer: Our UPS range from 600va to 600kva ,details as below: