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643pcs set Organic Chemistry Scientific Polymer Atom Molecular Model Teach Class Kit Set Crystal Structure Model
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643pcs set Organic Chemistry Scientific Polymer Atom Molecular Model Teach Class Kit Set Crystal Structure Model
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643pcs/set Organic Chemistry Scientific Polymer Atom Molecular Model Teach Class Kit Set Crystal Structure Model Set

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Sale Price:  $ 18.95 / piece
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This set includes 643 pieces of durable and fine quality plastic components, virtually indestructible, and come in a sturdy plastic case for storage.

A model of molecular structure of polymer tube tube molecular structure model + can build diamond, graphite, sodium chloride, carbon 60 crystal structure model and alkanes, alkenes, alkynes, halides, alcohols, phenols, aldehydes, ketones, esters, acetic acid, methanol, methane, ethane and other common inorganic / organic and complex C H, O, N, S, organic chemical molecular structure model, but also to build a biological model of protein and DNA fragments, build special biochemical model and high molecular weight, suitable for teaching and laboratory use.

Features:
1, Suitable for junior high school students to study chemistry
2, Easy to understand the molecular structure of chemical
3, Training students’ ability

Model: XMM-402
Sphere diameter 9mm, ball type
Spheres Type: Hydrogen Carbon Oxygen Nitrogen Sulfur Chlorine;
Link Type: Short Medium Long
Quantity: 1 set (as picture show)
Material: Plastic
Total Quantity: 643Pcs

Name Holes Color Amount
H-Hydrogen 1 white 80
Halogen 1 green 8
Metal 1 gray 8
F-Fluorine 1 orange 8
S-Sulfur 1 yellow 8
O-Oxygen 2(110º) red 18
S-Sulfur 2(110º) yellow 8
C-Carbon 2(180º) black 8
O-Oxygen 2(180º) red 8
N-Nitrogen 3(120º) blue 8
C-Crabon 3(120º) black 65
N-Nitrogen 4(109º28″) blue 10
C-Crabon 4(109º28″) black 50
C-Crabon 5(120º90º) black 40
N-Natrium 6(90º) gray 18
Cl-Chlorine 6(90º) green 18
Name Link Color Amount
single link(20mm) single link transparent 120
single link(28mm) single link transparent 100
double link(45mm) double link transparent 60

Package included:

1 set(643pcs) Atom Molecular Models for Teacher Organic Chemistry

1 pcs box







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DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  $ 34.45 / piece
Sale Price:  $ 18.95 / piece
from AliExpress