All of our Seattle products, including dedicated servers, colocation and VPS, use the same China optimised networking if using Spartan Host IP addresses. Only exceptions are non DDoS protected IPs and L7 protected IPs (DDoS-guard - used if you select L3, L4, L7 when purchasing additional IPs).
The routing we use is as follows:
China Telecom + Unicom inbound (China to US) = AS4134
China Mobile inbound = China Mobile International (CMI)
China Telecom + Unicom + Mobile outbound (US to China) = AS4837
AS4837 looking glass: https://lg.sea.spartanhost.net
We also have CMIN2 routing available as an upgrade, ask sales if interested. CMIN2 VPS plans are here and it is selectable as an upgrade when purchasing a Seattle dedicated server.
CMIN2 looking glass:
Default 20Gb/s DDoS protection: https://lg.sea.cmin2.spartanhost.net
200Gb/s DDoS protection: https://lg.sea.200g.cmin2.spartanhost.net