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ARQ stands for Automatic Repeat reQuest. It is a protocol used in telecommunications and computer networks to ensure reliable data transmission. When data is sent from one device to another over a network, there is always a chance of errors occurring during transmission. ARQ helps to detect and correct these errors by using acknowledgments and retransmissions. The process begins with the sender sending a packet of data to the receiver. The receiver then sends an acknowledgment back to the sender, indicating that it received the packet correctly. If the sender does not receive this acknowledgment within a certain time frame, it assumes that the packet was lost or corrupted during transmission and sends it again.ARQ protocols can vary in complexity and efficiency depending on specific requirements and network conditions. Some common examples include Stop-and-Wait ARQ, Go-Back-N ARQ, and Selective Repeat ARQ. These protocols play a crucial role in ensuring reliable communication in various network applications like email, web browsing, file transfers, etc.

ARQ's main products are high-performance architectural coatings and sealants.