Which SMS platform is better to use?

The enterprise reading short message sending platform is based on the short message ports directly provided by China Mobile, China Unicom and China Telecom, and is connected to the Internet to realize batch sending and customized sending of short messages with the number specified by customers. It takes 3 seconds to send SMS normally. The letter reading platform has the official approval port of the Ministry of Industry and Information Technology, and it has access to more than 65.438 million channels and dozens of backup channels across the country, escorting the short message sending of enterprises!