SZS (CNSZ security technology co.,ltd) is one of subordinate companies of XRT(Xi'an Reputation Technology Co.,Ltd).SZS is located in a sea port---shenzhen city and due to the reason it is responsible for exporting all the products made by XRT.SZS has more than 20 professional will offer you better service for internation business.XRT is a chinese high-tech biotechnology company mainly focus on the commercialization research and development of biotechnology, natural products and spices chemical t