China Mobile SMS Marketing Channel

I need a reliable international SMS delivery solution that allows me to send large volumes of promotional messages to mobile users in mainland China. The content of these messages is uniform, so there is no need for personalized adjustments for each recipient; therefore, what matters most are the efficiency of delivery, stability, and competitive pricing for bulk sending.

I need an SMS service that already has connections to suppliers, along with an SMPP management panel that enables me to send messages on my own. If you already have direct access to China Mobile or another high-quality messaging channel, please specify the expected message delivery rate, the available sender numbers, and the registration steps required before I can start using this service.

Ideally, this solution should be able to handle marketing SMS campaigns targeting individual users, while also ensuring stable message delivery to major carriers such as China Mobile, China Unicom, and China Telecom. It would also be useful if it offered APIs or web interfaces that facilitate bulk message uploading; any standard protocol such as SMPP or HTTP/JSON is acceptable, as long as it supports high-concurrency transmission.

Please provide the following information:
• The number of messages you can send per day or per hour
• The success rate and latency of messages sent within China
• Available sender number options and related registration requirements
• The pricing structure (per message or with bulk discounts)
• Examples of reports on the performance of marketing campaigns conducted in the Chinese market recently

We will start with small-scale testing first, and once the delivery results meet our expectations, we will immediately increase the volume of messages sent.