Even though Chemical Engineering is a relatively new field in engineering compared with the other engineering fields, substantial theoretical concepts have been evolved enabling formulation and modelling of processes involved in chemical and allied process industries. Simultaneously, parallel developments in methods for obtaining quick solutions to the understanding and the design of the processes in the form of graphical representations have also evolved. Such graphical analyses have become quite popular in their applications in solving examples in unit operations. As a consequence nearly all undergraduate courses in Chemical Engineering have incorporated application of the graphical methods in unit operations in their syllabi.
Many texts designed for undergraduate courses in Chemical Engineering present theories and methods of solution of problems of heat and mass transfer, phase equilibria and separation processes analytically to a reasonable depth whereas the graphical methods have been given a scanty treatment.
Many texts designed for undergraduate courses in Chemical Engineering present theories and methods of solution of problems of heat and mass transfer, phase equilibria and separation processes analytically to a reasonable depth whereas the graphical methods have been given a scanty treatment.
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Exchange & Return Policy
Seller's Information
| Seller | Penerbit USM |
|---|---|
| Shipping from | |
| Return/Exchange address | |
| Notice on Return/exchange | WARRANTY: You may return most new, unopened items sold and fulfilled by Penerbit USM within 15 days of delivery for a full new books. |
PrestoMall Return/Exchange Policy
- Cancellation
- Request for cancellation if product has not been dispatched after payment completion.
- Strictly no cancellation for E-voucher after purchased.
- Return
- Request for return within 7 calendar days following delivery date.
- Check seller's approval on buyer's request.
- Buyer sends product in question to seller.
- Seller receives and checks returned product.
- Seller approves return and return is completed.
- Strictly no return or refund for E-voucher.
- Exchange
- Request for exchange within 7 calendar days following receipt of delivery.
- Check seller's approval on buyer's request.
- Buyer sends product in question to seller.
- Seller receives and checks returned product
- Seller send new product to buyer, and buyer receives it, and exchange is completed.
- No exchange for E-voucher purchased.
How to Request for Cancellation/Return/Exchange
- You can request for cancellation after completing payment and if product has not been dispatched by then, cancellation request is approved and you can receive refund.
But, in case seller has already dispatched product, cancellation request can be rejected. - You can request for return after obtaining product, you should send the product in question to seller.
After seller checks if returned product is flawed, and approves your request, return is completed and payment is refunded. - You can request for exchange if wrong product is shipped, you should send the product in question to seller.
After seller checks if returned product is flawed, seller approves your request, and re-sends new product.
Criteria for Return/Exchange
You can request for return/exchange within 7 calendar days following delivery date. But return/exchange request cannot be made in following cases:
- When request due to change of mind is made after 7 calendar days following delivery date
- When product is used, destroyed or damaged
- When tag attached to product is removed or package of product is opened and product value is damaged
- When sealed package is opened or packaging materials are lost
- When too much time has passed and product value has so decreased that its re-sale is not possible
- When return/exchange request is made for customized product such as hand-made shoes or accessories
- When components of product (including free gift) have been used or lost
- When buyer did not follow instructions included in product
As e-voucher products are immediately sent to your e-mail, returns/exchanges are not available. Please take note of this before purchase, and input your e-mail address correctly.
As Mobile Top-up products are directly reloaded on your cell phone number, returns/exchanges are not available. Please take note of this before purchase, and enter your cell phone number correctly.
For any inconvenience regarding Cancellation/Return/Exchange, please email to hello@prestomall.com and we will do our best to help you.
Notice
- Please note that, direct transaction with the seller without using PrestoMall payment service can cause problems such as; not receiving the product, receiving different product etc.
- For sales products and contents registered by the seller, PrestoMall run by Presto Mall has no responsibility on any of the registered contents.
