we an provide free samples for our clients to sent and verify the quality of our goods. And we have good After-service.Tianjin Airuipu   Technology Co., Ltd. is located in Tianjin. Our company has a first-class sales team and logistics team, for you to do product after-sales service and safe transportation services. If you do not receive our product, we can send you a second time. Our products are exported to the United States, Canada, Mexico and other more than 20 countries in the world. We ar... we an provide free samples for our clients to sent and verify the quality of our goods. And we have good After-service.Tianjin Airuipu   Technology Co., Ltd. is located in Tianjin. Our company has a first-class sales team and logistics team, for you to do product after-sales service and safe transportation services. If you do not receive our product, we can send you a second time. Our products are exported to the United States, Canada, Mexico and other more than 20 countries in the world. We are always looking for long-term clients.  More Less