Changchun DongChen Industrial Group Co.,LTD. is a diversified excellent manufacturer. We mainly include all kinds of school network, laboratory and multimedia classroom, teaching equipment etc. campus hardware software facilities, office furniture, ...

Yiwu Youshang Import & Export Co., Ltd. is a worldwide leader in the manufacture of scientific products. With over USD5 million annual sales and global market coverage, we at continue to confirm our record proven success manufacturing distribution 10,000 ...