J-20

Military tungsten alloy cube is usually consisted of W-Ni- Fe or W-Ni- Cu or even W-Ni-Cu-Fe. The most important property for tungsten alloy cube is that small volume with high density, which means it can be used as counterweight for J-20.

The Chengdu J-20 (Jian-20; simplified Chinese: 歼-二十; traditional Chinese: 殲-二十; pinyin: Jiān èr shí) is a fifth-generation, stealth, twin-engine fighter aircraft prototype being developed by the Chengdu Aircraft Industry Group for the Chinese People's Liberation Army Air Force (PLAAF).[4] The J-20 made its first flight on 11 January 2011. General He Weirong, Deputy Commander of the People's Liberation Army Air Force said in November 2009 that he expected the J-20 to be operational in 2017–2019.

The PLAAF designates the J-20 as "Project 718". The general designer of the aircraft is reportedly Yang Wei, who was the general designer of CAC/PAC JF-17 Thunder.

On October 29th, 2013, Battledfield 4 developed EA dice was launched. China's PLA joined in the game. Battlefield 4 is one of my favourite games. I can play as a member of PLA to fight against U.S. Marine, and I can use J-20.