韩国三级电影播放_成年黄色电影_美国做爰xxxⅹ性视频_日本一区二区在线_bbbbbbbbb免费毛片视频_91欧美_91成人app_国产91免费视频_国产精品成人免费视频_欧美一级二级三级_亚洲制服丝袜在线播放_日本韩国欧美一区_非洲一级片_亚洲国产精品久久久久_日本va欧美va国产激情

Product features:

1. The international standard 1 / 4-28 thread can be directly connected to the luer connector interface, and the syringe can be used for arbitrary injection;

2. The contact material with liquid is PTFE, which is resistant to organic solvent and has good compatibility;

3. Imported from Britain to ensure product quality;