Contact Do you have a question? We are always there for you! We have compiled the frequently asked questions on our Customer Service page. We are very happy with you as our customer. Therefore, tips or possible points of improvement are always welcome! It is therefore very important that you report it, so that we can optimize our service. Can't find your question here? Our customer service is ready for you! Please contact us using the form below or send an email to: info@onlinechemicalien.nl . Your question is often answered within 2 business days. Would you like to register a return or do you have a complaint? Link Returns Link Complaint page