Wubeling F.
Wyatt Paul Graham
Wyvill J. Craig
X-Ray Research GmbH
Xenocs
Xeoncs
XRD-Tools S.R.L.
Xurity Ltd.
Yan Yiming
Yang Yongyi
Yazici Dostum F.
Yazici Dostum F.
Yazici Rahmi
Yi Jae Mok
Yokozawa Yutaka
Yxlon International X-Ray GmbH
Zhang Yongzhi
Zhong Zhong
Zienert Inka
Zombo Paul John