Customer Service. At SIE, we pride ourselves on the highest level of service to the customer. Several modes of communication are offered. While our office hours are 8:00 a.m. to 5:00 p.m. EST, our application specialists are available 24/7 to handle our customers' emergency needs. In addition, our website and email provide 24/7 convenience for any type of request. Our application specialists are also available for on-site calls, product demonstrations, and application assistance. Our office staff works hard to process orders in a timely manner and assist customers with technical details and product research.