DigitalOcean – Get 免费赠送$40 限新客户 – 仅 1 code per account
DigitalOcean – Hosting/VPS Service with US, EU、Singapore Datacenters
They have new 优惠券 on May 2015. Same deal as always, 仅 1 code per account. They make you give Credit Card details first to verify who you are supposedly but its still a nice way to test things out.
优惠券 for 免费赠送$40 (优惠券 has expired on 2015 May 01):
优惠券 for 免费赠送$10: