Same config as Hong Kong Airlines (Both are in HNA Group)
Not entirely. Total seat count is the same, configuration is different:
-33 Business -108 Premium Economy -193 Economy Total: 334 seats
-33 Business -301 Economy Total: 334 seats
What I know is that HX is doing the following (for A350 ordered themselves):
-108 Premium Economy
For those 108 "PEY" seats , they are the same seats with extra few inches of legroom only.
That means they have 2 versions of A350, for first few from Azul, they have 33 Azul Business Seats + 301 Econ seats, for their own order, they have 33 Business Seats same as JD (with red cover), and 301 Econ seats (108 with extra legroom)
Chinese Hainan Airline Group (HNA) became the largest shareholder for Azul Airlines back in late 2015, it was an internal decision to transfer these Azul orders to other airlines with HNA group due to the needs of long haul frames in mainland China (I explain this below).
My airline contact in China told me two weeks ago, neither Capital Airlines nor Sichuan Airlines are expecting to operate any A350 before the year end, although Sichuan is way ahead of Capital by investing a lot of money on equipment and training. (But Capital can always "borrow" resources from Hong Kong Airlines, like maintenance work.)
HNA may have to load a lot of frames to Hong Kong Airlines first, then bring them back to the mainland, like they did with A330s.
HNA is in a very difficult position for the next few years, as they are not state owned, they are not going to have a big share in the new Beijing international airport (CZ and MU will dominate 80% of slots). HNA is trying to have quite a few small airlines (Capital is one of them) fly long haul from varies second tier city locations, these market are very small, heavily rely on local government payment (normally last 2-5 years, like BA received from Chengdu). That's why they switched Azul order.