Esco is a professional manufacturer and an exporter of SECURITY EQUIPMENTS such as the HAND HELD METAL DETECTOR, WALK THROUGH METAL DETECTOR WHICH IS CAPABLE TO DETECT BY EACH SECTION, UNDER VEHICLE INSPECTION SYSTEM etc. The HAND HELD METAL DETECTOR is being treated as our main item at the moment, it has various advantages for example, the weight is quite light (220g), vibration function for silent scanning, simple & refined design and the quality inspected very carefully. We have made improvement for the weak points and provide you our product with competitive prices. The other two items are available soon we are planning to introduce about details for the new items asap. Esco is a looking forward to hearing from the positive news from you soon. We truly hope your prosperity.* One more important thing, we acquired "CE(Certificate of EMC Compliance)" and can implement "OEM" as your request. If you have further request, pls do not hesitate to contact us. We will be at your service anytime.