Shenzhen Mars Work Industrial Co.,Ltd. is an industry leading designer, developer and manufacturer of cctv products. We provide good quality and reasonable price products. Most of our products are certified with UL CE, RoHS, FCC. Centro Tech products has a good feedback from our customers, as we become some famous brand OEM / ODM partners, our market has already reached to more than 100 countries all over the world. Our aim is to provide preferential price, quality assurance, welcome new and old customers good service.