Shenzhen Kaise Company is a high-tech telecom company which specializes in wireless products, includ Simcom/Cinterion/Sierra/Huawei/Telit GSM/CDMA/EDGE/WCDMA/HSDPA Modules, and Holux/Globalsat GPS modules. The wireless products have been exported to Indonesia,Thailand, ect Aaisa countries, Africa, Europe, and Ameirca. We sincerely thank our existing customers and consumers for using our products and hope our products can assist more clients to become successful! Warranty: All the products we sell come with a 12 month warranty. We provide full after-sales service to our whole sale customers and drop shippers. Warranty benefits apply equally to wholesaler orders and drop shipper single item orders.