1. Surge protective device psells licence 2. Surge protective device examinings reports (the quality surveillance inspection center of Ministry of Railways ) of protecting device . 3. Surge protective device examinings reports (the protective device test center of thunder and lightning) 4. ISO9001 quality management system authentication certificate 5. The new high-tech enterprise asserts the certificate 6. Letter of patent of appearance design 7. The instrument licence measures the certificate 8. Honorary certificate of " innovative product enterprise " 9. ltml logo 1 10. ltml logo 2
11. ltml 1ogo 3
