免费观看黄a片在线观看-激情综合色综合啪啪五月丁香搜索-色呦呦国产精品-在线 色-小镇姑娘1979版-欧美夜夜爽-亚洲中文字幕婷婷在线-97久久天天综合色天天综合色hd-深夜福利影院-野花中文免费观看6-亚洲精品sm一区二区-日本三级中文-天天干国产-久久精品熟女亚州av麻豆-色成人亚洲-好色先生视频污-九色porny丨国产首页注册-免费国产视频-精品欧美一区二区三区在线观看-国产精品久久久久久亚洲毛片

FEATURE

• Modern, simple but reasonable design.

• Specialfiltering function, highly effective UV device to kill various germs.

• Scientific waterproof design of the ring to ensure it's air proofing.

• Multistage hose connector suitable for different size of tubes.

• EFU-15000 and EFU10000 with the functions of  backwash and over-voltage indicator.