Kinefinity is authorised by Alphatron Broadcast Electronics to sell Alphatron EVF and provide after-sales service in China. Please contact Alphatron Broadcast Electronics directly if you want to buy the product, but you do not work in China.
The following is from description from its official product website:
The Alphatron EVF-035W-3G can be used with a wide range of cameras thanks to it’s HD-SDi and HDMI inputs. Where all pervious 3rd party EVF’s came on the market with HDMI support only, the Alphatron EVF is a unique technological innovation!
HD-SDI input makes it suitable for the most cinema cameras without using any intervening converter.
The Alphatron EVF gives camera operators the comfort, monitoring versatility and enables extremely fast and precise focusing!