Dear Valued Partner,

Thank you for your continued trust and support.

Due to the recent significant increase in global prices of electronic components and metal

materials, our product costs have been continuously rising. According to our data, the price

increases of key raw materials and components are as follows:

Chips: +30%

Memory chips: +200%

Metal structural parts: +15% to +30%

PCB materials: +20%

Basic components (resistors, capacitors, etc.): +20%

To maintain product quality and supply stability, we have maximized internal cost control and

absorbed part of the price increase. However, we are still unable to fully cover the rising costs of

raw materials and components. After careful consideration, we have decided to increase the

selling price of our IP doorbell product series by approximately 15%, effective May 10, 2026.

Notes regarding this adjustment:

*Orders placed before the effective date that have not yet been delivered will be invoiced at the

original prices.

*New orders placed on or after the effective date will be subject to the adjusted prices.

This price adjustment is unavoidable. We will continue to optimize costs and provide you with

better products and services. If you have any questions, please feel free to contact us.

Thank you again for your understanding and continued partnership.