China Mobile Bulk SMS Routing，SMS routing provider

I need a reliable international SMS route that can deliver large-scale promotional messages to mobile users in mainland China. My campaign content is uniform—there is no requirement for per-recipient personalization—so the focus is on throughput, stability, and competitive pricing for batch sending.

Ideally, your solution already handles A2P marketing traffic and can demonstrate solid delivery rates with the major Chinese carriers (China Mobile, China Unicom, China Telecom). An easy-to-integrate API or web portal for bulk uploads is acceptable; SMPP, HTTP/JSON, or similar standard protocols all work for me as long as they support high concurrency.

Please let me know:
• Daily or hourly sending capacity you can guarantee
• Typical success ratio and latency for China routes
• Available sender ID options and any registration requirements
• Detailed pricing tiers (per-SMS or volume discounts)
• Sample delivery reports from recent Chinese campaigns

We will begin with a small test batch; once delivery metrics meet expectations, I’m ready to scale quickly.