Improve Ws-13 Mar 19, 2018 10:56:21 GMT -5 Quote Select PostDeselect PostLink to PostBack to Top Post by avenue on Mar 19, 2018 10:56:21 GMT -5 bbs.tiexue.net/post_12948296_1.htmlaccording to the article, improve WS-13 appear on the TV.increasd the thrust from the original 85kn to 90kn.MTBF also increased by 1/3