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Speakers are also called "horns". It is a very commonly used electro-acoustic transducer, which can be seen in sound-producing electronic and electrical equipment. A speaker is a transducer device that converts electrical signals into acoustic signals. The performance of the speaker has a great influence on the sound quality. The speaker is the weakest component in the audio equipment, and it is the most important component for the sound effect. There are many types of speakers, and they vary widely in price. Audio electrical energy produces sound through electromagnetic, piezoelectric or electrostatic effects that cause its cone or diaphragm to vibrate and resonate (resonate) with the surrounding air.

1. Continental Europe FBA air transportation first trip

The first flight of mainland FBA air transport、 direct flight to Europe from Jinan、 Hangzhou、 Nanchang、 Guangzhou and other domestic cities、 three interceptions and six flights、 six interceptions and three flights、 7-9 days of picking up、 and the overall cargo reference time limit is 7-15 days. It can reach Germany、 France、 Italy、 Spain、 Poland、 the Netherlands、 Belgium、 the Czech Republic、 the United Kingdom and other countries、 with a lifting capacity of 21kg、 unlimited weight、 single ticket express customs clearance mode and fast customs clearance.

2. Hong Kong European FBA Air Freight First Trip

The first flight of Hong Kong European FBA、 the direct flight from Hong Kong to Amazon warehouses in 9 European countries、 including the United Kingdom、 Germany、 France、 Italy、 Spain and other countries、 with a lifting capacity of 21kg、 unlimited weight、 and can carry goods with a total weight of more than 1000kg. Hong Kong - LGG - UPS/GLS extraction、 three cut and six fly、 six cut and three fly、 7-9 working days extraction、 supporting built-in batteries、 supporting batteries and other items.

The international logistics special line refers to the route channels to specific countries、 such as the British special line、 the American special line and the German special line.

International express delivery refers to the express delivery and logistics business conducted between two or more countries (or regions). The transportation of letters、 commercial documents and articles between countries (or regions) is a means of inspection and release of express mail through border ports between countries and customs. After the international express arrives at the destination country、 it needs to be transshipped again in the destination country to deliver the express to the final destination、 which is called international express.

The transportation modes of international logistics special line include air transportation、 sea transportation、 rail transportation、 land transportation、 etc. The modes of transportation of international express include air transportation、 sea transportation、 rail transportation、 etc.

International logistics focuses on the delivery of large quantities of goods to the destination and reduces costs by means of large-scale transportation; The overall price is lower than that of commercial express; Speed and timeliness are better than postal packets; Low packet loss rate. The timeliness of international express is very strong; High security of goods; Strong customs clearance capability; A wide range of goods can be collected.

Logistics special lines、 direct transportation from one place to another without transit、 and general special line logistics enterprises will operate a number of special lines. Special lines have the advantages of fast time and high efficiency. Todropshipping supply chain integrates multiple global dedicated lines and door-to-door dedicated lines with high cost performance.