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Contact Us A: Please feel free to contact our Order Customer Support Team: service@sunlusale.com. In order to help you solve the problem as soon as possible, please attach the order number and where you purchased it to the email.   B: Business Cooperation Contact: service@sunlusale.com Bulk quantity or OEM, ODM business.   C: For After-sales Service: service@sunlusale.com We will have engineers to answer your question....