1105pcs large Molecular Model Kit,organic Inorganic Crystal structure,Chemistry

1105pcs Large Molecular Model Kit, Organic Inorganic Crystal structure, Chemistry 100% Brand New & High Quality DLS-91105 A Large Set Polymer Chemistry Molecular Model Sets designed for school teaching and lab research, Economical & versatile, this set does it all whether you are a chemistry major, engineer or biologist who needs 1 only chemistry credit. This set can build models for VSEPR theory or alkanes, alkenes, aromatics, sugars, amino acids & more! cyclohexane; 15 double thick bonds for chair-boat flips and parts for any of the 20 amino acids, sugars, fats and stereochemistry: chiral pairs, cis & trans and 14 orbitals for VSEPR Theory, lone electron pairs; and lots of bonds for building lots more stuff such as:alcohols, thiols, amines, ketones, and more simple lattices such as diamond, graphite, NaCl, Carbon 60 and so on. If any damage during shipping when you receive the package, please feel free to contact us and better to send us the photo of damaged item, so we can check what happened and make the best solution for you. Shipping Information 1. We only ship to the confirmed address provided by PayPal. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to.2. Import duties, taxes and charges are NOT included in the item price or shipping charges. These charges are the buyer's responsibility.3. The items will be ship out soon when received a verified payment (Max. 3 business days).4. This item is usually shipped from US warehouse or Asia warehouse.5. Ship worldwide, usually need 30–50 business days (to the US about 12-24business days).6. We try our best to provide you the most reliable, affordable way of shipping service. But sometimes international delivery is highly depended on the local custom and post service. If you do not receive your item on time, please contact us immediately for further assistant. We will responsible for any damage or losses incurred in the shipping process. Return & Refund Policy 1. If you are not satisfied with the item for any reason, please contact us within 5 BUSINESS DAYS after receiving the item.So we can arrange something for you such as a refund or exchange, subject to availability, after we receive the item back in good and unused condition.2. Return shipping cost is your responsibility. We reserve the right to 'NOT refund' if you leave a negative feedback BEFORE contacting us.3. If you are satisfied with our products and services, please leave your good comment in detail rating of your order. Your recognition will make us more confident to develop business and serve you better.Customers' satisfaction is the most important thing for us. Any problems could be solved through communication. Thanks For Taking Your Time and Have A Great Day!