"Hangzhou Sheng Zhong Covers Co,.Ltd is a professional and experienced diploma cover manufacturer and certificate holder supplier. With manufacturing facilities across worldwide, we have been serving 1000+ companies, colleges, universities, organizations, retailers, distributors and agencies nationally and internationally for over two decades now. We design, produce and sale full line of custom diploma covers, padded certificate covers, leatherette certificate holders, certificate frames, diploma tubes, autograph books to the distributor, wholesaler, retailer in worldwide. With a 70,000 square feet plant and more than 80 well-trained workers, we have an annual 5 million diploma covers capacity. Sheng Zhong people have continuously tried to improve production capacity by using state-of-the-art machines worldwide, this guarantees a short lead time and timely delivery. Moreover, rush order services can also be provided." Quality is highly valued by us. We have full sampling ability, no process need to be sub-contracted and inner QC guaranteed the every single diploma cover from our factory is good product. And also any defective product can be returned and exchanged.We aspire to nurture long-term relationships rather than to harvest short-term gains.