§¥§à§Ò§â§à §á§à§Ø§Ñ§Ý§à§Ó§Ñ§ä§î §Ó §Þ§Ú§â Iprogift
§¬§Ñ§â§ä§Ñ §ã§Ñ§Û§ä§Ñ

 

Power Bank & USB §æ§Ý§ï§ê-§ß§Ñ§Ü§à§á§Ú§ä§Ö§Ý§Ú §¶§à§Ü§å§ã §ß§Ñ §Ú§ß§Õ§Ú§Ó§Ú§Õ§å§Ñ§Ý§î§ß§í§ç §á§à§Õ§Ñ§â§Ü§à§Ó §Õ§Ý§ñ 11 §Ý§Ö§ä.

Check out the great features of the theme and purchase Awesome now....

§£§ß§Ö§ê§ß§Ú§Û §¡§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â


§£§í §Õ§Ö§Û§ã§ä§Ó§Ú§ä§Ö§Ý§î§ß§à §Ù§ß§Ñ§Ö§ä§Ö, §Ü§Ñ§Ü §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î §Þ§à§ë§ß§à§ã§ä§î Bank2013-5-22 Power Bank (§ä§Ñ§Ü§Ø§Ö §ß§Ñ§Ù§í§Ó§Ñ§Ö§Þ§í§Û §Ó§ß§Ö§ê§ß§Ú§Û §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â) §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §á§à§â§ä§Ñ§ä§Ú§Ó§ß§à§Ö §Ù§Ñ§â§ñ§Õ§ß§à§Ö §å§ã§ä§â§à§Û§ã§ä§Ó§à §ã §Ò§Ý§à§Ü§à§Þ §á§Ú§ä§Ñ§ß§Ú§ñ §Ú §Ù§Ñ§â§ñ§Õ§Ü§Ú §æ§å§ß§Ü§è§Ú§Û §â§Ñ§Ù§Ó§Ú§Ó§Ñ§ð§ë§Ú§ç§ã§ñ §ã §ã§Þ§Ñ§â§ä§æ§à§ß§à§Ó. §¿§ä§à §Þ§à§Ø§Ö§ä §Ù§Ñ§â§ñ§Ø§Ñ§ä§î §Þ§à§Ò§Ú§Ý§î§ß§í§Ö §ä§Ö§Ý§Ö§æ§à§ß§í §Ú §Õ§â§å§Ô§Ú§Ö §è§Ú§æ§â§à§Ó§í§Ö §å§ã§ä§â§à§Û§ã§ä§Ó§Ñ §Ó §Ý§ð§Ò§à§Ö §Ó§â§Ö§Þ§ñ. §³ §á§à§â§ä§Ñ§ä§Ú§Ó§ß§í§Û §Ò§Ñ§ß§Ü §ã§Ú§Ý§í, §Ó§í §Þ§à§Ø§Ö§ä§Ö §â§Ö§ê§Ú§ä§î §á§â§à§Ò§Ý§Ö§Þ§å §ß§Ú§Ù§Ü§à§Û §Ó§í§ß§à§ã§Ý§Ú§Ó§à§ã§ä§Ú §è§Ú§æ§â§à§Ó§í§ç §á§â§à§Õ§å§Ü§ä§à§Ó, §ß§Ö §Ù§Ñ§Ò§à§ä§ñ§ã§î §à §Ó§Ý§Ñ§ã§ä§Ú. §®§à§ë§ß§à§ã§ä§î §Ò§Ñ§ß§Ü §á§à§ã§ä§Ö§á§Ö§ß§ß§à §ß§Ñ§ê§Ú §Ö§Ø§Ö§Õ§ß§Ö§Ó§ß§í§Ö §á§à§ä§â§Ö§Ò§ß§à§ã§ä§Ú §Ú §ç§à§â§à§ê§Ú§Þ §á§à§Þ§à§ë§ß§Ú§Ü§à§Þ §è§Ú§æ§â§à§Ó§í§ç §á§â§à§Õ§å§Ü§ä§à§Ó. §´§Ö§Þ §ß§Ö §Þ§Ö§ß§Ö§Ö, §á§à§â§ä§Ñ§ä§Ú§Ó§ß§í§Û §Ò§Ñ§ß§Ü §ã§Ú§Ý§í §Ö§ë§Ö §ß§à§Ó§í§Û §á§â§à§Õ§å§Ü§ä, §Þ§ß§à§Ô§Ú§Ö §á§à§ä§â§Ö§Ò§Ú§ä§Ö§Ý§Ú §Þ§à§Ô§å§ä §ß§Ö §á§à§ß§ñ§ä§î, §Ü§Ñ§Ü §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î §Ú §à§Ò§ã§Ý§å§Ø§Ú§Ó§Ñ§ä§î. §£§à§ä §ß§Ö§Ü§à§ä§à§â§í§Ö §ã§à§Ó§Ö§ä§í §á§à §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§Ú§ð §Þ§à§ë§ß§à§ã§ä§Ú §Ò§Ñ§ß§Ü.

§ï§Ý§Ö§Þ§Ö§ß§ä§ß§Ñ§ñ §Ò§Ñ§ä§Ñ§â§Ö§ñ

§Á§Õ§â§à §Á§é§Ö§Û§Ü§Ñ §Ò§Ñ§ä§Ñ§â§Ö§Ú §á§à §Þ§à§ë§ß§à§ã§ä§Ú §Ò§Ñ§ß§Ü§Ñ §ã§à§ã§ä§à§Ú§ä §Ú§Ù §Õ§Ó§å§ç §é§Ñ§ã§ä§Ö§Û, §à§Õ§ß§Ñ §ß§à§ã§Ú§ä§Ö§Ý§Ú §Þ§à§ë§ß§à§ã§ä§Ú, §Ñ §Õ§â§å§Ô§à§Û §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §ã§â§Ö§Õ§ã§ä§Ó§à§Þ §Õ§â§å§Ô§à§Û §ï§ß§Ö§â§Ô§Ú§Ú §Ó §ï§Ý§Ö§Ü§ä§â§Ú§é§Ö§ã§Ü§å§ð. §´§Ñ§Ü, §Ò§Ñ§ä§Ñ§â§Ö§ñ §ñ§é§Ö§Û§Ü§Ú §Ó§Ñ§Ø§ß§í§Û §ã§ä§Ñ§ß§Õ§Ñ§â§ä §Õ§Ý§ñ §Ü§Ñ§é§Ö§ã§ä§Ó§Ñ §á§Ú§ä§Ñ§ß§Ú§ñ §Ò§Ñ§ß§Ü§Ñ. §°§Ò§ë§Ñ§ñ §Ò§Ñ§ä§Ñ§â§Ö§ñ §ã§à§ä§à§Ó§à§Ô§à §ï§ß§Ö§â§Ô§Ö§ä§Ú§é§Ö§ã§Ü§à§Ô§à §Ò§Ñ§ß§Ü§Ñ §Ó§Ü§Ý§ð§é§Ñ§Ö§ä §Ó §ã§Ö§Ò§ñ §á§à§Ý§Ú§Þ§Ö§â§ß§å§ð §Ý§Ú§ä§Ú§Ö§Ó§å§ð §Ò§Ñ§ä§Ñ§â§Ö§ð, 18650 §Ý§Ú§ä§Ú§Ö§Ó§Ñ§ñ §Ò§Ñ§ä§Ñ§â§Ö§ñ §Ú AAA §ß§Ú§Ü§Ö§Ý§î-§Þ§Ö§ä§Ñ§Ý§Ý-§Ô§Ú§Õ§â§Ú§Õ§ß§í§Ö §Ò§Ñ§ä§Ñ§â§Ö§Ú.

§±§à§Ý§Ú§Þ§Ö§â§ß§í§Û §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â: §³§ä§Ñ§ß§Õ§Ñ§â§ä§ß§à§Ö §ß§Ñ§á§â§ñ§Ø§Ö§ß§Ú§Ö 3,7 §£, §Ò§à§Ý§Ö§Ö §æ§à§â§Þ§Ñ, §Þ§à§Ô§å§ä §Ò§í§ä§î §ß§Ñ§ã§ä§â§à§Ö§ß§í, §Ò§à§Ý§î§ê§Ñ§ñ §Ö§Þ§Ü§à§ã§ä§î, §Ò§í§ã§ä§â§Ñ§ñ §Ù§Ñ§â§ñ§Õ§Ü§Ñ, §ß§Ö§Õ§à§â§à§Ô§à§Û §Ú §ê§Ú§â§à§Ü§à §Ú§ã§á§à§Ý§î§Ù§å§Ö§ä§ã§ñ (§ß§Ñ§á§â§Ú§Þ§Ö§â, §Õ§Ý§ñ §Þ§à§Ò§Ú§Ý§î§ß§à§Ô§à §ä§Ö§Ý§Ö§æ§à§ß§Ñ, MP4, §á§à§â§ä§Ñ§ä§Ú§Ó§ß§í§Û §Õ§Ú§ß§Ñ§Þ§Ú§Ü).

18650 §Ý§Ú§ä§Ú§Ö§Ó§Ñ§ñ §Ò§Ñ§ä§Ñ§â§Ö§ñ: §³§ä§Ñ§ß§Õ§Ñ§â§ä§ß§í§Û 3,7 §ß§Ñ§á§â§ñ§Ø§Ö§ß§Ú§Ö, §Þ§Ñ§Ý§í§Û §â§Ñ§Ù§Þ§Ö§â, §Ò§à§Ý§î§ê§Ñ§ñ §Ö§Þ§Ü§à§ã§ä§î, §Ó §à§ã§ß§à§Ó§ß§à§Þ §Ú§ã§á§à§Ý§î§Ù§å§Ö§ä§ã§ñ §Õ§Ý§ñ §ß§à§å§ä§Ò§å§Ü§à§Ó §Ú §Õ§â§å§Ô§Ú§ç §Ó§í§ã§à§Ü§à§Ü§Ñ§é§Ö§ã§ä§Ó§Ö§ß§ß§í§ç §á§â§à§Õ§å§Ü§ä§à§Ó.

§¡§¡§¡ NiMH §Ò§Ñ§ä§Ñ§â§Ö§Ú: 1.2V §¯§Ñ§á§â§ñ§Ø§Ö§ß§Ú§Ö §³§ä§Ñ§ß§Õ§Ñ§â§ä§ß§í§Û, §à§ä§ß§à§ã§Ú§ä§Ö§Ý§î§ß§à §ß§Ö§Ò§à§Ý§î§ê§à§Û §Ö§Þ§Ü§à§ã§ä§Ú, §ê§Ú§â§à§Ü§à §Ú§ã§á§à§Ý§î§Ù§å§ð§ä§ã§ñ, §ß§Ñ§á§â§Ú§Þ§Ö§â, §Ò§í§ä§à§Ó§à§Û §ä§Ö§ç§ß§Ú§Ü§Ú.

§±§à§Ý§Ú§Þ§Ö§â §Ý§Ú§ä§Ú§Û-§Ú§à§ß§ß§í§Û §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â, §á§à §ã§â§Ñ§Ó§ß§Ö§ß§Ú§ð §ã §à§Ò§í§é§ß§í§Þ §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â§à§Þ §Ý§Ú§ä§Ú§Û §Ü§Ý§Ö§ä§à§Ü, §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §Ò§à§Ý§Ö§Ö §Õ§à§â§à§Ô§Ú§Þ. §£§í§ã§à§Ü§Ñ§ñ §Ö§Þ§Ü§à§ã§ä§î §á§à§Ý§Ú§Þ§Ö§â§Ñ §Ý§Ú§ä§Ú§Ö§Ó§Ñ§ñ §Ò§Ñ§ä§Ñ§â§Ö§ñ §ã §á§â§Ö§Ú§Þ§å§ë§Ö§ã§ä§Ó§Ñ§Þ§Ú, §Ü§Ñ§Ü §Ó§í§ã§à§Ü§Ñ§ñ §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §Ú §ß§Ö§Ò§à§Ý§î§ê§à§Û §â§Ñ§Ù§Þ§Ö§â §Õ§Ö§Ý§Ñ§Ö§ä §Ö§Ô§à §á§à§ã§ä§Ö§á§Ö§ß§ß§à §Ù§Ñ§Þ§Ö§ß§Ú§ä§î §à§Ò§í§é§ß§å§ð §Ý§Ú§ä§Ú§Ö§Ó§å§ð §Ò§Ñ§ä§Ñ§â§Ö§ð.

 

§³§à§Ô§Ý§Ñ§ã§ß§à §ß§Ñ§è§Ú§à§ß§Ñ§Ý§î§ß§í§Þ §ã§ä§Ñ§ß§Õ§Ñ§â§ä§Ñ§Þ §Ò§Ñ§ä§Ñ§â§Ö§Ú, §à§ã§à§Ò§Ö§ß§ß§à §Õ§Ý§ñ §á§à§Ý§Ú§Þ§Ö§â§ß§à§Û §Ò§Ñ§ä§Ñ§â§Ö§Ú, §Ö§ã§ä§î §ã§ä§â§à§Ô§Ñ§ñ §Ú§Ö§â§Ñ§â§ç§Ú§é§Ö§ã§Ü§Ñ§ñ §ã§Ú§ã§ä§Ö§Þ§Ñ. §¬§Ñ§é§Ö§ã§ä§Ó§à §Ú §ã§Ó§à§Ö§Ó§â§Ö§Þ§Ö§ß§ß§à§ã§ä§î §Ò§Ñ§ä§Ñ§â§Ö§Ú §â§Ñ§Ù§Õ§Ö§Ý§Ö§ß §ß§Ñ §ä§â§Ú §å§â§à§Ó§ß§ñ.§¬§Ý§Ñ§ã§ã §Ò§Ñ§ä§Ñ§â§Ö§Ú - §ß§à§Ó§í§Û §á§à§Ý§Ú§Þ§Ö§â§ß§í§Û §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â; §¬§Ý§Ñ§ã§ã §£ §Ò§Ñ§ä§Ñ§â§Ö§Ú - §Ú§ß§Ó§Ö§ß§ä§Ñ§â§Ú§Ù§Ñ§è§Ú§ñ §Ò§à§Ý§Ö§Ö §ä§â§Ö§ç §Þ§Ö§ã§ñ§è§Ö§Ó §ß§Ö §â§Ñ§Ù§Ò§Ú§â§Ñ§Û§ä§Ö §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â§ß§å§ð §Ò§Ñ§ä§Ñ§â§Ö§ð; §³ §Ü§Ý§Ñ§ã§ã §Ò§Ñ§ä§Ñ§â§Ö§Ú - §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§ß§í§Ö §Ò§Ñ§ä§Ñ§â§Ö§Ú. §£§ß§Ú§Þ§Ñ§ß§Ú§Ö, §é§ä§à §Ü§Ý§Ñ§ã§ã §³ §Ò§Ñ§ä§Ñ§â§Ö§Ú §Õ§Ö§ê§Ö§Ó§à, §ß§à §Ö§ã§ä§î §ã§Ö§â§î§Ö§Ù§ß§í§Ö §á§â§à§Ò§Ý§Ö§Þ§í §ã §Ü§Ñ§é§Ö§ã§ä§Ó§à§Þ. §£ §ã§ä§à§Ú§Þ§à§ã§ä§î §Ü§Ý§Ñ§ã§ã §ß§Ú§Ù§Ü§Ú§Û, §ß§à §â§Ö§è§Ö§ã§ã§Ú§ñ §à§é§Ö§ß§î §Ò§í§ã§ä§â§à.§¬§Ý§Ñ§ã§ã §Ò§Ñ§ä§Ñ§â§Ö§ñ §Ý§å§é§ê§Ú§Û §Ó§í§Ò§à§â, §Ö§ã§Ý§Ú §å §Ó§Ñ§ã §Ö§ã§ä§î §Ò§ð§Õ§Ø§Ö§ä.

§Ù§Ñ§â§ñ§Õ§Ü§Ñ

§£§à§à§Ò§ë§Ö §Ô§à§Ó§à§â§ñ, §á§Ö§â§Ó§à§Ö §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§Ú§Ö §Ó§ß§à§Ó§î §Ü§å§á§Ý§Ö§ß§ß§à§Ô§à §á§à§â§ä§Ñ§ä§Ú§Ó§ß§à§Ö §Ù§Ñ§â§ñ§Õ§ß§à§Ö §å§ã§ä§â§à§Û§ã§ä§Ó§à §ä§Ö§Ý§Ö§æ§à§ß§Ñ §Ò§Ñ§ä§Ñ§â§Ö§Ú §à§é§Ö§ß§î §ß§Ú§Ù§Ü§Ú§Û. §´§Ñ§Ü §é§ä§à §Ý§å§é§ê§Ö §á§à§Ý§å§é§Ú§ä§î §á§à§Ý§ß§à§ã§ä§î§ð §Ù§Ñ§â§ñ§Ø§Ö§ß §á§à§ã§Ý§Ö §á§à§Ü§å§á§Ü§Ú, §é§ä§à §á§à§Ù§Ó§à§Ý§ñ§Ö§ä §á§à§Ó§í§ã§Ú§ä§î §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §Ó§ã§ä§â§à§Ö§ß§ß§à§Ô§à §Ý§Ú§ä§Ú§Ö§Ó§à§Ô§à §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â§Ñ §Þ§à§Ò§Ú§Ý§î§ß§à§Ô§à §Ò§Ñ§ß§Ü§Ñ §ï§Ý§Ö§Ü§ä§â§à§Ú§ß§ã§ä§â§å§Þ§Ö§ß§ä§Ñ.

§¿§ä§à §ß§à§â§Þ§Ñ§Ý§î§ß§à, §é§ä§à §Ó§Ý§Ñ§ã§ä§î §Ò§Ñ§ß§Ü §á§à§Ý§å§é§Ñ§Ö§ä §ä§Ö§á§Ý§à, §Ñ §Ó§à §Ó§â§Ö§Þ§ñ §á§â§à§è§Ö§ã§ã§Ñ §Ù§Ñ§â§ñ§Õ§Ü§Ú §Ú§Ý§Ú §â§Ñ§Ù§â§ñ§Õ§Ü§Ú. §°§Õ§ß§Ñ§Ü§à, §Ö§ã§Ý§Ú §Þ§à§Ò§Ú§Ý§î§ß§í§Û §Ò§Ñ§ß§Ü §á§Ú§ä§Ñ§ß§Ú§ñ §à§é§Ö§ß§î §Ø§Ñ§â§Ü§à, §é§ä§à §Ò§í §Ò§í§ä§î §á§â§à§Ò§Ý§Ö§Þ§à§Û, §Þ§à§Ø§Ö§ä §Ò§í§ä§î, §ã §Ù§Ñ§â§ñ§Õ§ß§à§Û §è§Ö§á§Ú. §´§Ñ§Ü §Þ§à§Ò§Ú§Ý§î§ß§í§Û §Ò§Ñ§ß§Ü §á§Ú§ä§Ñ§ß§Ú§ñ §Ó§í §ã§à§Ò§Ú§â§Ñ§Ö§ä§Ö§ã§î §Ü§å§á§Ú§ä§î §ã§å§ã§Ý§à §Ú§Þ§Ö§Ö§ä §Ù§Ñ§Ó§í§ê§Ö§ß§ß§å§ð §Ú §Ò§à§Ý§Ö§Ö §â§Ñ§Ù§â§ñ§Õ§Ñ §Ù§Ñ§Þ§í§Ü§Ñ§ß§Ú§ñ §Ú §Ò§Ñ§ä§Ñ§â§Ö§ñ §Õ§à§Ý§Ø§ß§í §Ò§í§ä§î §á§à§Ý§å§é§Ö§ß§í §à§Ò§í§é§ß§í§Þ §Ù§Ñ§Ó§à§Õ§Ñ. §¯§Ö §ã§é§Ú§ä§Ñ§Û§ä§Ö §Ñ§Ü§Ü§å§Þ§å§Ý§ñ§ä§à§â, §Ü§à§ä§à§â§í§Û §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§ã§ñ §ß§Ö§Ò§à§Ý§î§ê§Ú§Þ§Ú §Ù§Ñ§Ó§à§Õ§Ñ§Þ§Ú.

§£ §Õ§à§á§à§Ý§ß§Ö§ß§Ú§Ö §Ü §Ó§â§Ö§Þ§Ö§ß§Ú §Ù§Ñ§â§ñ§Õ§Ü§Ú, §Ü§Ñ§Ü §á§â§Ñ§Ó§Ú§Ý§à, 2-5 §é§Ñ§ã§Ñ §Ó §Ý§å§é§ê§Ö§Þ §ã§Ý§å§é§Ñ§Ö. §±§à§ã§Ý§Ö §á§à§Ý§ß§à§Û §Ù§Ñ§â§ñ§Õ§Ü§Ú, §ã§ß§ñ§ä§î §â§Ñ§Ù§ì§Ö§Þ, §Ü§Ñ§Ü §ä§à§Ý§î§Ü§à §Ó§à§Ù§Þ§à§Ø§ß§à. §¯§Ö §á§â§à§Õ§à§Ý§Ø§Ñ§ä§î§ã§ñ §Ó §ä§Ö§é§Ö§ß§Ú§Ö §Õ§Ý§Ú§ä§Ö§Ý§î§ß§à§Ô§à §Ó§â§Ö§Þ§Ö§ß§Ú §Ù§Ñ§â§ñ§Õ§Ü§Ú.

www.external-battery.net §¤§å§Ñ§ß§é§Ø§à§å Sunwith Co, LTD, §à§ã§ß§à§Ó§Ñ§ß§ß§Ñ§ñ §Ó 2005 §Ô§à§Õ§å, §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §Õ§à§é§Ö§â§ß§Ö§Û §Ü§à§Þ§á§Ñ§ß§Ú§Ö§Û Global Vision Group (HK) Limited. §®§í §á§â§à§æ§Ö§ã§ã§Ú§à§ß§Ñ§Ý§î§ß§à §Ú §Ú§Ù§Ó§Ö§ã§ä§ß§í§Û §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î §¢§Ñ§ß§Ü §ã§Ú§Ý§í §Ú §ï§Ü§ã§á§à§â§ä§Ö§â§à§Þ §Ó §¬§Ú§ä§Ñ§Ö. §³ §ß§Ñ§ê§Ö§Û §ã§à§Ò§ã§ä§Ó§Ö§ß§ß§à§Û §á§â§à§æ§Ö§ã§ã§Ú§à§ß§Ñ§Ý§î§ß§à§Û §è§Ö§ß§ä§â§Ñ R & D, §æ§Ñ§Ò§â§Ú§Ü§Ú §Ú §Þ§Ñ§â§Ü§Ö§ä§Ú§ß§Ô§Ñ, §Þ§í §á§à§ã§Ó§ñ§ä§Ú§Ý§Ú §ã§Ö§Ò§ñ, §á§â§Ö§Õ§Ý§Ñ§Ô§Ñ§ñ §Ü§Ý§Ú§Ö§ß§ä§å §Ú§ß§ß§à§Ó§Ñ§è§Ú§à§ß§ß§í§ç §á§â§à§Õ§å§Ü§ä§à§Ó 3C.


Previous£ºOver!
Next£ºUSB §æ§Ý§ï§ê-§ß§Ñ§Ü§à§á§Ú§ä§Ö§Ý§Ú