Guangzhou Haoye Security Technology Co., Ltd. Is a professional andHi-tech CCTV camera manufacturer in R&D, production. We haveowned our brand "GSA"and also welcome OEM and ODM brand. GSA is a professional manufacturer and exporter of comprehensiveCCTV systems. Our products include all kinds of CCTV cameras,DVRand NVR and security accessories etc. we can provide full range ofproducts and provide with a personal-service,We step into CCTVcamera production group based on the collection of advantage ofeach other and central technology All of our products are passedISO9001, qualified by CE, FCC certifications and accord with RoHSdirective approved. Â