在线观看人与动牲交视频_夜夜高潮次次欢爽AV女_奇米在线视频观看_欧美精品七区_色悠久久综合网_少妇潮喷无码白浆水视频

荷蘭Leja
荷蘭LEJA公司成立于1995年.是世界最專業生產一次性精子計數板的著名廠家，其產品技術性能在業界處于絕對領導地位。其用戶遍布全球，其產品具有無毒性，單層技術，虹吸技術，無氣泡技術等多項專利技術，能夠最大程度的保證精子活性和測量的精確度。
Leja is a small company and was founded in 1995. The head of the IVF clinic of the Amsterdam Free University thought that semen analyses could be done better. He invented the concept behind the Leja slides. After a long period of testing, the first slides to be officially marketed were released in 2002. Since then, a lot of product development has been taken place. New slide designs were developed. Also a physical occurrence was noted: the Segre-Silberberg effect. A special slide design was developed in order to compensate for this effect.
Currently a lot of research to constantly improve our products is conducted by the R&D department.