欧美老女人性爱视频,无码AV一区二区,免费看欧美日韩一区二区三区,免费一级a毛片在线播放直播

1、吉川擁有自己的研發(fā)團隊，大部分成員擁有同行業(yè)10-20年的從業(yè)經(jīng)驗 其中還有成員參與了（1 996年）“中國噴砂機行業(yè)”的標準制定。
2、吉川每年投入近500萬的研發(fā)費用進行設(shè)備研發(fā)和改良；
3、吉川研發(fā)團隊與華南理工大學(xué)和南昌大學(xué)為友好合作單位；
4、吉川研發(fā)團隊獲得了近60項專利；

1 . Yoshikawa has the industry’s most professional R & D team, most of the members have 10-20 years industry experience
which does not have members involved in the (1 996) “blasting machine industry in China,” set the standard record .
2. Yoshikawa Each year, nearly 500 million R & D R & D costs of the improvement of equipment;
3. Yoshikawa R & D team and the South China University and Nanchang University for the friendly and cooperative units;
4. Yoshikawa R & D team received nearly 60 patents;