IVTOP has its own factory in Shenzhen China. He has its own stronger design and research team for new product. It owns all kinds of testing machines for the quality of every product. Though we can’t reach 100%, we can make sure 99.9% good product. We are also a kindly manufacturer, So we have many friends, So no matter how many order you placed, We can produced on time. We also provide OEM and ODM service, If you have new product, Welcome your visit.