Policies & Terms of use


To provide a wholly secured online shopping experience, DNA engineering Co., Ltd. that own the website as follow: and In the way to bring a complete business transparency to any of our internet domain user, buyer, viewer, that will use we have established these online Policies.

Remark: Many of our parts are for racing or off-road use only, the fact that the customer will install and use those parts on the public road will be the buyer responsibility.

DNA engineering Co., Ltd. Handle no responsibility regarding mechanical, electrical or any other possible failure when the client uses aftermarket performance parts.

Order process

Automated parts inventory

DNA engineering Co., Ltd. keep in mind to provide an accurate daily inventory of our available parts to our customer. Our parts inventory got an automated update every time that an operation is quantified.

As our customer could visualise the chosen part stock quantity availability when he places an order, the part available in stock will appear during the inquiry and payment process.

If the ordered part is in stock then it will be shipped right away after that we received the payment, if it is not in stock anymore, we will start the production process, it needs a lead time from two to five weeks.

Shipping process

When you proceed a checkout, a dimensional shipping rate is displayed, this cost is base on approximative shipping box dimensions if the value seems to be over comparing the real one, then contact us, and we will review the shipping cost.

Beside this fact, if we made an error regarding the shipping cost estimated, you will receive an email with a revised delivery cost.

In case of International orders, we will need some additional personal details like your address, your phone number and so on.

Partially damaged part during the shipment must be reported immediately to the courier at the delivery time. Shipping damage concern or claims from the recipient must retain in the original parcel package for inspection and or collection from the courier.

Shipping damage claim must be honoured or investigated during the seven days that follow the receipt of the shipment.

All shipped product from the DNA engineering Co., Ltd. European or Asian Warehouse are shipped by air freight as DHL, FedEx, UPS, EMS or sea Freight and will require a signature at the delivery time.

Payment terms

DNA engineering Co., Ltd. accepts online payment via the PayPal gateway.
As an alternative, Western union and TT Bank Transfers payment are possible, but the billing and the delivery address must match.
All orders paid at the time of purchase.
Items Prices and shipping cost are subject to change anytime according to the exchange rates value.


DNA engineering Co., Ltd. products supply come with a warranty; this one does not cover the parts if the item got a failure if the failure is the result of the installation or utilisation.
A Professional automotive centre must install our parts.

Satisfaction Guarantee

Happy customers tell their friends and could bring you more client which will generate more business, then more income and benefits.
As we are looking to honest and reliable cooperation in business with our customers, we are dedicated to clear any trouble possible, communication is crucial, and every problem got a proper solution.

We are here to make a happy customer and grow the business together; we do not enjoy any conflict that will only result in a severe image for our company.

You have a question, a request; you need to speak about the product, do not hesitate to contact us

Part return process

If there is any problem with the parts and the customer request a return, the return fee will be at the charge of the customer. 14 days return policy, an item must be in brand new condition and not have been used.
All returns will be provided with a Return Authorisation Number to ship back.
All bespoke order, custom orders are non-returnable and non-refundable.

Return address

DNA engineering Co., Ltd. head office
9/5 Moo8, Srinakarin Rd, soi Sukhumvit 113, T.Samrong Nue, A.Muang, Bangkok, Samutprakarn 10270 Thailand

Order refund

You have placed an order, and the part is not in stock.
You do not want to wait the production lead time, but we charge your credit card already.

In the same day, you have to contact us, and we will cancel the order and refund you right way.
We will apply a cancellation fee of five percent; we will refund the remaining to your account.

Terms of use

Effective 01/01/2017


Users of the website govern these general terms of use, by visiting and using our online store and site, you agree this terms of use and privacy policy, it will be the case any time you will visit us.

If for any reasons you do not agree with those rules and policy, please stop to use our website right away.

DNA engineering Co., Ltd. and the internet sites are our properties; we have the right to change these rules at any time, they will be applicable immediately after that we post them online. The user is responsible for making himself aware of this rules and their updates.

DNA engineering Co., Ltd provide a fully secured website experience, SSL encryption certificate, cloud-flare DNS and Sitelock daily monitoring and scan assure the protection of our website user. Nevertheless, the user is in charge to use a virus and malware protected computer, and he accepts each content, process, billing, inquire on his own will.

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