October 23 witnessed a milestone in the national deep-sea oil and gas production, i.e. SCR for deep-sea use produced by HYST passed the strict qualification by the expert panel, signaling the localization of  SCR for deep-sea use.

After serious discussion, the experts agreed that SCR for deep-sea use produced by HYST reached the world-advanced level in performance indexes, dimensional accuracy and other aspects with the capability to replace the import products and can be put into mass production.