TüV SüD (Technischer Überwachungs-Verein, Technical Inspection Association) is a third-party verification agency. They offer Assessment Reports and Verified Videos. This gives buyers trust and authoritative information about suppliers.

Our company got the third place on Alibaba trade assurance competition. We done more than $980,000 usd on March. We are so grateful to all our customers. It was you who have created such a great achievements!!!

Recently we have many clients complain Trump make their local currency undervalued. Especially South America clients Like Argentine. One Mexico client said Trump tariffs to Mexican products have plummeted the Mexican peso. Before 18.5-19.4 pesos for a dollar, but now 21 pesos for a dollar!

Bridge mode is a connection method for power amplifiers in the professional audio field.Most professional audio amplifiers support bridging. Set the status of the amplifier to bridge mode (BTL), and then the speaker wiring is connected across the output stage (positive) of the two channels, and the speaker is not grounded. As for the phase positive and negative, the power amplifier will have the positive and negative poles of the BTL.

Condenser microphone is not as widely use as dynamic microphone. So many people have a lot of misunderstanding of it .Some people think that the condenser microphone can be directly connected to the computer. Some people think that the condenser microphone can be plugged into the large two-core microphone port of the karaoke device. Some people think that the condenser microphone must be used independently of the 48V power supply box. The answers to the above all questions are : No.