Gmail or Yahoo may classify our system emails as SPAM. You may find these email in trash area. Please check carefully and set our email email@example.com into your communication list.
System emails include registeration/new password/message answer/order conformation/amount notification/shipping notification.
2. If you want to view computer edition, please tick "switch to computer edition".
3. Research and cart function are on the page top.
We recommend you to register in DasTool and raise question in "Contact Us" page.
Please click "My Orders" right after you have sent the order, and check if receiving confirmation email. If not, the order may be blocked by firewall, or the setting in your computer/cellphone. In that case please contact us by email.
Please login by your email/password/verify code. If your computer/cellphone is protected by firewall, you may not complete the order steps. In that case please contact us by email.
Our instruction is pdf file. Please download Adobe Reader. Download Adobe Reader