Shenzhen Hong Yin Yuan Technology Co., Ltd is the sales subsidiary company of the Dafu Electronic Gift Co.,Ltd ,it was established in 1998 in Shenzhen. We are specialized in manufacturing quartz watches, heart-rated watches and sportswatches. and other gift products . Along with our development, we have established LED department, dedicated to the research, development and production of Low Carbon, Environmental Protection and Energy Saving products. We have successfully researched and developed LED watches.All of our products comply with international quality standards and are greatly...