Terms and conditions of Sales

The site www.scientific-mhd.eu is the property of the company SCIENTIFIC/MHD SARL registered in the trade and companies register of Valenciennes under number 445 520 414.

1. General

These general conditions of sale (hereinafter the "GTC") are applicable to any sale or order of products (hereinafter "the Products") placed by a consumer customer within the meaning of the introductory article of the Consumer Code (hereinafter referred to as the “Consumer(s) Client(s).
Any order of products on our site implies the unconditional acceptance by the consumer and his full and complete adherence to these general conditions of sale which prevail over all other documents.
You declare that you are at least 18 years old and have the legal capacity or hold parental authorization allowing you to place an order on our site.
The GTC prevail over any other contractual document, unless otherwise expressly accepted by the Seller. These TTCs are accessible at any time on the Seller's Site.

These general conditions of sale apply to the exclusion of all other conditions, those in force in model shops.
The stores referenced on our site in the “Our Distributors” section are independent traders and are free to offer prices different from our site.

Our GCS may be subject to subsequent modifications, the version applicable to the Customer's order is that in force on the site on the date of placing the order.

 It is advisable to print and keep a copy of these General Conditions of Sale for future reference.
Unless proven otherwise, the data recorded by us constitutes proof of the transactions and their date. The S.A.R.L. SCIENTIFIC/MHD reserves the right to modify these conditions at any time.

Any reproduction, in whole or in part, of the elements of this website is systematically subject to the authorization of the company SCIENTIFIC/MHD S.A.R.L.
By connecting to this site published and put online by the company SCIENTIFIC/MHD S.A.R.L., you access content protected by law, by the provisions of the Intellectual Property Code.


2/ Contractual Information


In accordance with articles L.111-1 and following of the Consumer Code, the Seller provides the Consumer Customer, before the conclusion of any order, the following information which appears on the Site and/or in the quote and/or herein GTC:


• Information relating to the identity and contact details of the Seller,
• The essential characteristics of the Product,
•    The price of the products,
• The methods of payment and delivery of the Product,
• The estimated delivery time of the Products,
• The existence and terms of exercise of the legal warranties applicable to the Products,
• Information relating to the right of withdrawal.

The Products whose sale is governed by these GTC are those offered for sale on the Seller's Site.


The products are offered within the limits of available stocks, as specified on the Seller's Site and when placing the Customer's order.
The Customer is required to refer to the description of each Product provided in French in order to know its properties and essential particularities. It should be noted that the actual rendering may differ from that of the photographs or graphics presented on the Site. The responsibility of the Seller cannot therefore be engaged in this respect.


The choice and purchase of a Product and, more generally, of an order are the sole responsibility of the Customer. Consequently, it is up to the latter to verify the accuracy of his order and to immediately notify the Seller of any error he finds in his order.

All prospectuses, catalogs, advertisements, have only an informative, indicative and non-contractual value. We have tried to describe as much as possible on our site the characteristics of the products we offer, however an error is always possible.

On the other hand, manufacturers may be required to change all or part of the characteristics of their articles without notifying us, this with the aim of improving the quality of these or constrained by problems of supply of components or materials. raw. Our companycannot be held responsible for these changes beyond our control.

4/ Price, Availability


The Customer explicitly acknowledges his obligation to pay the agreed price when he places an order with the Seller.
The prices applied to the Customer's order of Products are those indicated on the Site at the time of placing the order.
The prices do not consider the delivery costs, invoiced in addition, and indicated to the Customer before he validates and pays for his order. Delivery costs are calculated according to the total amount of the order, the weight and the delivery method chosen by the Customer when ordering, the destination of the package.


For any order placed by the Customer who opts for collection at our MARLY warehouse, no delivery costs will be requested.
Under no circumstances may the sums paid be considered as a deposit or down payment.
The final invoice is enclosed in the package.

The prices including French VAT (20%) of the items for sale on the site are indicated in Euros and include VAT, eco-contribution included.
Our prices and promotions can be modified at any time, the prices invoiced being those valid at the time of the validation of the orders.

Only available items can be ordered by consumers on the website, or in the case of pre-sales for certain new products.
Items are delivered within the limits of available stocks.

We have more than 20,000 references in our catalog and in stock in our warehouse located in France allowing fast deliveries. If we show that an item is available, it is with us in 99% of cases allowing us to process and ship your order without delay, excluding holiday periods and closure of our company.
However, the Customer is reminded that regardless of the delivery method chosen, Saturdays, Sundays and public holidays in their country are not counted in the calculation of the delivery times indicated.

However, an error between the computer stock published on the site and the physical stock is always possible and we thank you for your understanding if this case were to arise during one of your orders, making it impossible for us to deliver one or multiple items in your order.
In that case we will refund on your credit card the amount of the missing items.

We have chosen the best service providers to deliver to you under the conditions of optimal speed and efficiency. We support a significant part of these service costs supplemented by a fixed participation of the customer.

In the case of large parcels that can only be sent by carrier, an additional fees contribution may be requested, it is displayed with the article.

For the cost deliveries in our neiborough countries of France you must consider in which country you are living.


For Belgium and Luxembourg, the French delivery costs are applied.

Group 1: For Spain, Portugal, Netherland.
The delivery through Mondial Relay is possible in these countries.
You have the choice by Mondial Relay or delivery to your door.

- 18,95 Euros by Mondial Relay whatever the amount ordered,
- 25,00 Euros for home/door delivery below 150 Euros of purchase,
- 15,00 Euros for home/door delivery over 150 Euros of purchase.

Group 2: For Germany, Austria and Italy.
The delivery through Mondial Relay is not yet possible in these countries.
Maybe in 2023 it will be possible.

The cost of the home/door delivery are:

- 19,95 Euros for home/door delivery below 150 Euros of purchase,
- 15,00 Euros for home/door delivery over 150 Euros of purchase.

These costs are for parcel below 30 kg.
For parcel over 30 kg the company SCHENKER must be used, and cost are indicated upon request.


Für die auf unserer Website verkauften Treibstoffe für Modellflugzeuge ist die Lieferung durch einen Spediteur, der zur Übernahme von Gefahrgut berechtigt ist, obligatorisch.
Spediteure für kleine Pakete, La Poste oder Chronopost dürfen in keinem Fall gefährliche Güter befördern.
Daher müssen Sie nach der Bestätigung Ihrer Bestellung zusätzliche Versandkosten berechnen, da die Pauschalgebühr  diese besonderen Versandkosten nicht abdecken kann. Diese Kosten können Ihnen vor Ihrer Bestellung auf Anfrage mitgeteilt werden. Sie hängen vom Gewicht und dem endgültigen Bestimmungsort ab.

Übersetzt mit www.DeepL.com/Translator (kostenlose Version)
Group 3: For all other countries in Europe such UK, Switzerland, Bulgaria, Cyprus, Croatia, Denmark etc. and overseas countries we can of course deliver your order, but we kindly ask you to contact our company by email to check the cost and the way of shipment case by case.

Payments are made using one of the 4 secure payment methods offered (Look opposite in the Payment section of the home page.).

Payment must be effective for the order to be accepted and considered by our services. The goods are not reserved until the payment is effective and accepted by one or other of the payment solutions offered on the site.

If the order is validated but the bank card or payment by Oney is refused by the bank, SCIENTIFIC/MHD reserves the right to cancel the order unless full payment is received by bank transfer prior to delivery. Please kindly refer the Payment methods offered if ONEY is possible in your country.

For deliveries in some foreign countries, you have the option of choosing the Mondial Relay option and the ordering process on our site will allow you to choose the relay point that best suit you near you.

If you opt for home delivery, our shipping department reserves the choice of carrier, which may be the international post parcel or our partner DPD for packages under 30 kg, a carrier for larger packages.

In the event of an order for heavy or bulky products such as BLACKHORSE or SEAGULL brand aircraft, fuel for scale models subject to shipping constraints, delivery will be made by carrier and may possibly incur additional fixed costs.
The delivery time may in this case take on average one week depending on the destination.

For foreign territories SCIENTIFIC MHD does not undertake to give a maximum delivery time, but commonly the parcel will be delivered within a week around France.

The seller cannot be called into question and held responsible for the consequences of any event beyond his control, cases of force majeure or due to the fact of carriers who delay or prevent the delivery of orders. Delays in delivery can in no way engage the responsibility of the seller and cannot result in the payment of damages.

In the case of a payment in 3 or 4 instalments by our partner Oney Banque, if the acceptance of a file generally only takes 2 hours, it may happen that some files may take 2 days before being validated.
In this case, the processing of your order will only be effective after effective validation by Oney.
Pending validation of payment by ONEY bank, the goods are not reserved.

Similarly, you must verify the accuracy of the information provided when placing the order, including the delivery address.
Our company cannot be held responsible for longer delivery times or loss of the package if the delivery information entered when ordering is incorrect.
In the case of a re-shipment request due to an error on your part, re-shipment costs may be requested.

It is specified that deliveries to the first or second floor are not guaranteed; the standard place of delivery, being understood as the ground floor for buildings and offices or as the threshold of stores on the street for businesses.

When the package is delivered to the consumer by the carrier, the consumer will be asked to date and sign the delivery form attached to the package in order to determine the starting point of the right of withdrawal (see below).
If the delivery form is not signed by the buyer when the package is delivered, it is deemed to have been collected or received within 5 working days following the validation of the order. The current withdrawal period from this date. In the case of home delivery, the withdrawal period runs from the delivery of the package to the recipient.

SCIENTIFIC MHD remains the owner of the items until full payment of the order.

Packages travel at your own risk. The moment we hand over the package to the transport company, the transfer of risk and peril takes place.
You are advised when delivering the package to check the condition of the goods.
If the package is deformed or damaged, or seems to have been opened by the carrier, if an abnormal noise is heard when you move the package, then you must note the condition of the goods in the presence of the delivery person and must make all reservations required on the delivery form in the event of damage or shortages.
You must clearly indicate on the transport slip that the goods are damaged, and we invite you to refuse the package in this specific case.
If your items are damaged during transport and you do not clearly indicate the reservations on the transport note, the responsibility of the company SCIENTIFIC/MHD cannot be engaged.
We invite you in one of these cases to call us immediately on 33 3 27 45 00 24 in the presence of the delivery person if possible, during our opening hours, if you speak english.

However, a physical or computer stock error is always possible and if it does not allow an item to be delivered, in the event of a delay of more than 7 days, you have the option of canceling your order within 60 working days. on this article, in accordance with the legal provisions.
In this case, if you have received the product after your cancellation, we will refund the product and the costs, upon receipt of it by us, complete and in its original condition.
In this case, we invite you to contact us by email at the company's headquarters so that we can give you an availability date if you wish. SCIENTIFIC/MHD reserves the right to cancel all, or part of the orders paid by the customer in the event of failure of its suppliers, by reimbursing the sum of the articles in question already paid and relating to the orders concerned.

6/ Terms of Payment

To inform you of the payment methods offered by our company, we invite you to look opposite in the Payment section accessible on the home page.

7/ Right of withdrawal

In accordance with the legal provisions in force, you have a period of 14 clear days from taking possession of your products when the package is delivered to your home to exercise your right of withdrawal from the company SCIENTIFIC/MHD without having to justify reasons or to pay a penalty and according to the methods described in article L.221-18 of the consumer code from 1/07/2016.

In accordance with the regulations in force, the right of withdrawal cannot be exercised for LiPo or other batteries unsealed or used by the customer.

When delivering the package to the consumer, the consumer will be asked to date and sign the delivery form attached to the package in order to determine the starting point of the consumer's right of withdrawal.

In the event of exercise of the right of withdrawal, only the price of the product(s) purchased and part of the initial shipping costs relating to these products will be refunded; the return costs remain at your expense.
No return for cash on delivery will be accepted for any reason.

The right of withdrawal form can be sent to you on request at contact@mhd.eu.
It is up to you to print it and fill it out if you wish to withdraw.
We kindly ask you to send by e-mail to contact@mhd.eu the withdrawal form before any return of goods to our headquarters.

Returns of goods must be made within fourteen days from the date of the request for withdrawal and in their original condition, unused and complete (packaging, accessories, instructions, etc.) allowing them to be re-marketed at the new condition and accompanied by a copy of the purchase invoice for reactive management.

Items subject to the right of withdrawal will be refunded after receipt of these at the headquarters of SCIENTIFIC/MHD SARL / Retour Internet 272, avenue Henri Barbusse 59770 MARLY LES VALENCIENNES FRANCE.

The Seller recommends that the Consumer Customer uses a shipping method with tracking and insurance and cannot be held liable in the event of loss, theft or damage to the Products reshipped by the Consumer Customer.

8/ Warranties

The items offered on the site comply with the regulations in force in France. SCIENTIFIC/MHD cannot be held liable in the event of non-compliance with the legislation of the country where the product is delivered (for example in the event of a ban on a product, etc.). It is up to you to check with the local authorities the possibilities of importing or using the products or services that you plan to order. They benefit from legal guarantees (legal guarantee of conformity and guarantee against hidden defects).

The consequences of a defective product are not covered by warranty, only the product is guaranteed.
Defective equipment under warranty must be sent directly to the after-sales service of the brand concerned, accompanied by a copy of your purchase invoice or warranty card and as detailed a description of the fault as possible. Shipping costs are your responsibility.

Any after-sales service intervention will be invoiced if the faulty operation is due to normal wear and tear of the item, negligence, adjustment or use error or lack of maintenance on the part of the owner.
As part of the implementation of legal guarantees, we invite you to contact our Online Sales department without delay at contact@mhd.eu or by telephone during office hours.
This one after checking, will indicate the methods of return to you.

The Legal Conformity and Legal Guarantees Against Latent Defects from the date of taking possession of the products only come into force if the product concerned has not been subject to mishandling, negligence, modification or misuse.
Under no circumstances can parts broken by impact or misuse of radio-controlled products, normal wear and tear parts during the operation of scale models be the subject of a warranty claim.

Limitation of liability and warranty Accumulators-Batteries
For NimH or Lithium Polymer batteries, given that the SCIENTIFIC/MHD company cannot verify the correct charging and use conditions for these batteries, it is not possible to apply a guarantee.
All consumables such as batteries, bulbs, fuses, power cables cannot fall within the scope of these warranties.

SCIENTIFIC MHD cannot be held responsible for the consequences of using a Li-ion or Li-Polymer battery, which must comply with strict instructions for use to avoid any damage to the product and its environment.

SCIENTIFIC MHD cannot ensure that the consumer will respect the intensities, charge and discharge capacities, cycles, storage requirements, precautions for use, in the use he will make of the accumulators in the applications. of model making.

During the use of such batteries in the practice of model making, the discharge may exceed the maximum specified by the manufacturer for the cells constituting the accumulator, in particular in the event of incorrect use/parameterization of the battery of a charger or a controller.
There is no warranty, by distributors or sellers such as SCIENTIFIC MHD, as to capacity, storage, or discharge characteristics for application to radio-controlled scale models, nor in other uses or aspects.

The use of lithium-polymer accumulators supposes the fact that the user accepts this limitation of liability clause, he is thereby fully responsible for the consequences of their use, he thus undertakes not to hold the manufacturers, distributors or retailers responsible. for any accident, injury, death of a person or damage to property.

We remind our customers/users that the battery charge must be done in a ventilated place, on a solid, clear and secure support, if possible, in the security bags provided for the Lipo batteries available for sale on our site.
The charging time must be checked by the user and the batteries disconnected if the time exceeds the nominal time.
The user must always monitor the charge of his batteries, from the beginning to the end of the charging cycle.

As such, the company SCIENTIFIC MHD reminds that all its batteries, whether of the MAXCELL or BLACK-LITHIUM brand, are delivered with a manual including advice for use and precautions for use.

We cannot advise you enough to read and re-read this manual before charging and using a LiPo battery.
SCIENTIFIC MHD will be released from any responsibility concerning the use of lithium-polymer batteries, the partial or destruction of a reduced model or the battery, the damage caused to the environment and to third parties, the premature aging of the electronic elements. or electric.
This limitation of liability applies whether the battery was sold with a model or separately.

The battery warranty no longer applies once the battery has been placed on a charger, to be charged or discharged, the company having no means of verifying compliance with the conditions of use.
Any operation on the cables or sockets (fitting, changing, soldering) of the battery cancels the guarantee of the latter.
By purchasing these products, you automatically agree to the conditions specified and mentioned above.

Similarly, any opening of an electronic product, radio control, heat or electric motor by a third party other than those belonging to the SCIENTIFIC/MHD after-sales service will result in the cancellation of all guarantees. Only SCIENTIFIC/MHD after-sales service personnel are authorized to take charge of after-sales service and the opening of products sold for repairs or analyses.

Legal Guarantee of Conformity
In accordance with the regulations in force, you have a period of two years to invoke the legal guarantee of conformity from the delivery of these articles. In the event of a defect found, you can choose between repairing or replacing the good, subject to the cost conditions in force. The defects of conformity which appear within twenty-four (24) months from the delivery of the Product are presumed to exist at the time of delivery, unless proven otherwise. However, in accordance with the provisions of Article L.217-7 of the Consumer Code, the Seller may combat this presumption if it is not compatible with the nature of the Product, or the lack of conformity invoked. Consequently, you are not required to provide proof of the existence of the lack of conformity during this period.

Legal guarantee against hidden defects
In accordance with the regulations in force, you have a period of two years to implement the guarantee against hidden defects from the discovery of the defect. In the event of discovery of a defect rendering the article totally or partially unfit for the use for which it is intended, you will be free to choose between the resolution of the sale or the reduction of the price of the sale subject to the conditions of cost. provided for by article L.217-9 of the Consumer Code. To proceed with a return, it is necessary to obtain the prior written authorization of the company SCIENTIFIC/MHD SARL by e-mail to contact@mhd.eu by attaching a copy of your invoice, and indicating the type of product concerned, as well as only clear explanations of the problem encountered.
The Seller will reimburse, replace or have repaired the Products under warranty deemed non-compliant or defective.

The Seller's warranty is, in any event, limited to the replacement or reimbursement of non-compliant Products or Products affected by a defect.

Guarantee of use
Model articles are not guaranteed.
The only legal guarantees are those of the hidden defect of conformity, see articles 1641 to 1648 of the Civil Code.
The reduced model items must not be used by unauthorized persons.

9/ Products classified as Dangerous

Other products intended for model makers, such as cyanoacrylate glues or cellulosic coatings and classified as Dangerous according to the legislation are on sale on the website. In accordance with article 48 of regulation 1272/2008 known as CLP, we invite you before ordering these articles classified as Dangerous, to consult on our site in the detail of the article the danger phrases and the precautions for use. You can also consult the safety data sheets for these items on our website and we advise you to read them carefully before any purchase and use.

10/ After-Sales Service


SCIENTIFIC/MHD provides after-sales service for the products it distributes. It is always best to go to your specialist retailer beforehand for any breakdown, in order to see if it cannot be detected and repaired on site in order to avoid return costs, always payable by the customer.

To proceed with a return for after-sales service, prior written authorization must be obtained from SCIENTIFIC/MHD by e-mail (contact@mhd.eu) enclosing a copy of your invoice, indicating the type of product concerned and the symptoms observed.
All products that will be returned for repair will bear 15€ including tax for the establishment of a repair estimate, these costs will bededucted from the repair invoice in the event of acceptance of the estimate by the consumer. In the event of refusal of the proposed estimate, the product will be returned to the sender as is and will not be reassembled. Return costs are always the responsibility of the customer.
Products returned without physical protection or poorly protected cannot benefit from the guarantee. It is therefore up to the buyer to take care to protect the returned products during transport.
The warranty covers manufacturing defects and not faults due to improper use, not wearing parts or breakage during the learning of radio-controlled model making.

The model articles sold by the SCIENTIFIC/MHD company are not toys, but scale models intended for adults over 14 years of age.
Repairs are the responsibility of the customer.

Before any use you must:

- Read the manual because it is essential to understand it in order to use the scale model correctly and not cause damage to it or to third parties due to incorrect handling,
- Understand the operation of the scale model, whether from a mechanical, electrical or electronic point of view,
- Carry out all the necessary checks (charge the batteries, check the radio control, check the correct assembly of the mechanical parts, check the tightness of the screws, the propellers, etc.) before any further use of your scale model.

CAUTION! Improper assembly and improper use can lead to the partial or destruction of the model with the risk of bodily injury. The user is solely responsible for damage related to the use and implementation of the scale model.

These GTC are subject to French law. The language of this contract is French. In the event of a dispute with professionals and/or traders, the courts of Valenciennes (France) will be competent. In the event of an international dispute, the French courts will have sole jurisdiction.

12/ Data Protection Act


SCIENTIFIC/MHD undertakes not to disclose to third parties other than those involved in the processing and delivery of your orders, the information that you communicate to it. This information is confidential. In accordance with the data-processing law and freedoms of January 6, 1978, you have a right of access, rectification and opposition to the personal data concerning you. To do this, simply send us an online request, indicating your surname, first name, email address and, if possible, your customer reference at contact@mhd.eu.