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Catalog: 1. Company strength 10 years of professional security monitoring, Product parameters can be provided, including image packages. Domestic merchants are welcome to contact us 500 units shipped on the same day, 5 days delivery, welcome to negotiate 【 About US 】 A professional security surveillance original equipment manufacturer (OEM) with 10 years of experience,we have immediate stock availability. We can ship up to 500 units on the same day, and customized orders can be delivered within 5 days.We welcome cooperation and in inquiries for further discussions. 2. Chinese Description 3. English Description 2. Chinese Description 3. English Description