Description
【Description】:
◆This set of chemical molecular structure model uses environmentally friendly non-toxic plastics, advanced design, reasonable configuration.
◆Can be used to build Inorganic and organic chemistry ball-stick molecular structure model.
◆Such as water, oxygen, hydrogen, hydrogen sulfide, graphite, sodium chloride, alkane, alkene, alcohol, phenol, aldehyde, ketone, etc.
◆Develop thinking , observation, practical and analytical ability, stimulate interest, enhance memory, help understanding.
【Shipping Tips】:
◆China Post Air： 15-25 working days.
◆ePacket：15-30 working days.
◆Others shipment methods depends on your country.
◆Due to different policies in different countries, there might be customs tax that should be paid by buyer.
▶We will carefully check and pack the products before shipment, If the product is defective or damaged in transit, please contact our customer service first, do not give a bad review, thanks.
