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Q: Are you a manufacturer or a trading company? A: We are a leading manufacturer of logistics security products for over 10 years located in Shenzhen China. Our main products including GPS e-locks,GPS tracker ,security seals and others.You are welcomed to visit us at any time! Q:Can we require any free samples for evaluation? A: Yes, a few of free samples could be offered for your evaluation but the express charge will be borne by you. Tell us your freight collect number of any express courier or contact us for the discounted charges. Q: Do you have any gurantee(or warranty) for your products? A: Yes,our warranty for is 1 year for all our products Q: Can we require our custom markings on the Products? A: Yes, sure! Custom laser markings could be available. Q: Can we require the bar code on the security seals? A: It depends on the specific item. Contact us now for the further information. Q: Are your security seals ISO17712 compliant? A: Some of our security seals are ISO17712 compliant. Please contact us for the details. Q: Can you design a new type for us based on our detailed requirement? A: With a professional and experienced designing team, we have satisfied most of our clients with their special requirement. Please feel free to contact us for the details. Q: What's your minimum order quantity? A: 1pcs for GPS elocks and GPS trackers,100pcs for bolt seals, 100pcs for cable seals, plastic seals and others. Q: Can we pay by credit card? A: Yes, sure. Payment by T/T, L/C, Paypal Western Union and credit card are all available.