Beijing SMS verification code platform, help recommend?

At present, there are many short message platforms in China, some of which are formal and some are illegal. To ask which platform is reliable, or try it yourself:

1) When choosing a short message platform, the most important thing is to ensure the "arrival rate". No matter how big the sending volume is, users usually receive very little, and the effect is naturally unsatisfactory.

2) Generally speaking, the price of SMS is everyone's concern. Expensive is not the key, but whether its service and effect are worthy of this price is the key. If we just blindly pursue the lowest price, it is really putting the cart before the horse.

3) It is best to have regular 106 short message channel and 10690 triple play channel resources, which should be paid attention to during testing.

4) It is very necessary to look at the qualification of a short message company. There is no platform with relevant qualifications, so it is not recommended that you choose here.

5) If the service personnel of a platform have a poor attitude and solve problems slowly, it is conceivable that cooperation will not be guaranteed.