Abstract: A tubeless air valve stem has a body, an airtight element, and a sleeve. The body has a passage, a through hole, and at least one side hole. The passage is formed on a top end of the body. The through hole is formed through a bottom end of the body and is in communication with the passage. The at least one side hole is formed through an outer surface of the body and is in communication with the passage. The airtight element is disposed around the body. The sleeve is disposed around the body for closing the at least one side hole. Gas or liquid can be injected into a tubeless tire via the at least one side hole. The intake efficiency of the tubeless air valve stem can be maintained and is not influenced by the remaining reinforcing agent.

Abstract: A tubeless air valve stem has a body, an airtight element, and a sleeve. The body has a passage, a through hole, and at least one side hole. The passage is formed on a top end of the body. The through hole is formed through a bottom end of the body and is in communication with the passage. The at least one side hole is formed through an outer surface of the body and is in communication with the passage. The airtight element is disposed around the body. The sleeve is disposed around the body for closing the at least one side hole. Gas or liquid can be injected into a tubeless tire via the at least one side hole. The intake efficiency of the tubeless air valve stem can be maintained and is not influenced by the remaining reinforcing agent.

Abstract: A valve stem core module has a core tube and a core pin. The core tube has a tube body and an airtight ring. The tube body has a mid segment located between two ends of the tube body. The mid segment matches a specification of 5V1 thread. The tube body further has a body space longitudinally formed through the tube body. The airtight ring is hermetically mounted around an outer side of one of the ends of the tube body. The core pin has a pin body inserted into the body space. The pin body further has a closing ring hermetically mounted around the pin body. The pin body further has a fixing nut combined with the pin body, protruding out of the tube body, such that the closing ring is hermetically closed on the tube body.

Abstract: The antenna module fabrication for a wireless electronic device includes setting up the antenna and the assembly base that is to connect the antenna to the designated circuit board. The antenna and the assembly base are two independent pieces, and the positioning parts are for positioning so that the antenna and assembly base are one body. The antenna module of the invention can achieve the advantages such as simple production, cost effectiveness, prevention of the antenna module from deforming and quality improvement.

Abstract: The antenna module fabrication for a wireless electronic device includes setting up the antenna and the assembly base that is to connect the antenna to the designated circuit board. The antenna and the assembly base are two independent pieces, and the positioning parts are for positioning so that the antenna and assembly base are one body. The antenna module of the invention can achieve the advantages such as simple production, cost effectiveness, prevention of the antenna module from deforming and quality improvement.

Abstract: The antenna module fabrication for a wireless electronic device includes setting up the antenna and the assembly base that is to connect the antenna to the designated circuit board. The antenna and the assembly base are two independent pieces, and the positioning parts are for positioning so that the antenna and assembly base are one body. The antenna module of the invention can achieve the advantages such as simple production, cost effectiveness, prevention of the antenna module from deforming and quality improvement.