Our products' quality are very stable,as this point, it made us obtain ISO9002 certificate,international CB Approved Certificate,CCEE CE Approval Certificate and National Safety Approval certificate successfully . If you are interested in establishing business relations with us in this line, pls let us know your specific requirements better send us the drawings of the products. We shall be pleased to forward detailed information for your reference. We assure you of our best attention to any inquiries from you, and anticipate your prompt response in this respect. Best wishes, Crystal Jovean & Rogy Electrical Holding Co., Ltd Tel +86-577-62792207,62792291,62792217ext. 568 Email Crystal@jr-china.com Crystal8098@hotmail.com