contact us if you need to consult products please call the hotline： shanghai ohans chemical co., ltd. mobile phone: +86 152 2121 6908 email: sales@ohans.com; email: service@ohans.com; email: technical@ohans.com; office address: creative industries park, baoshan, shanghai, china shandong newtop chemical co.,ltd. factory address: jining high-tech development zone, shandong, china
