Our goal is to prevent downtime and protect your equipment at critical times. The purchase of an Uninterruptible Power Supply (UPS) is but the beginning of your relationship with Siel Group. With its long-time experience ......Our goal is to prevent downtime and protect your equipment at critical times. The purchase of an Uninterruptible Power Supply (UPS) is but the beginning of your relationship with Siel Group. With its long-time experience and grass-roots presence, our Customer Support Service ensures total safety and optimal system management.