How to identify the authenticity of iron triangle earplugs?

Philips: Jiemian calls 95 105600 or sends a text message to 33 15 (mobile) 933 1 (China Unicom) to check the authenticity.

Iron triangle: call16831500-315 or send a text message to 958803 15 to identify the authenticity.

Sennheiser: Call 168403 15 or 0 10-644503 15 and send it to 33 15 (mobile) 933 15 (Unicom) to check the authenticity.

AKG: Please call the toll-free number 8008200959 to verify the authenticity.

KOSS, USA: See if there is a Chinese label of Beijing An Run Company on the box.

ALESSANDRO, USA: See if there is a Chinese label of Beijing An Run Company on the box.

American Shure: Series C (E2C, E3C, E4C, E5C) are all packed in Chinese with Shure anti-counterfeiting labels; G series

(E2G, E3G, E4G) comes with a special warranty card for An Run Shure products.

ETYMOTIC, USA: See if there is a Chinese label of Beijing An Run Company on the box.

Bayer Dynamics, Germany: See if there is a Chinese label of Hong Kong Zhuoxin Group on the box.

German MB QUART: See if there is a Chinese label of Beijing An Run Company on the box.

Japan Iron Triangle: See if there is a simplified Chinese label and sales area number (red seal, 3 digits) of Dexun Iron Triangle Company on the back of the box.

According to the regulations of Iron Triangle Company, the warranty will also be lost if the sales area number has been altered.

Sony: Check whether there are Chinese labels and laser anti-counterfeiting labels of Sony (China) Co., Ltd. on the back of the box.

Apple only has two kinds of headphones, in-ear headphones, more than 400 yuan, non-in-ear headphones, more than 200 yuan. Besides, there is no other style. Those extremely cheap Apple headphones are fake.