The following product replacement procedures are only applicable to products sold online. Products purchased from any retailer must follow the retailer's product replacement and warranty procedures.

Under normal circumstances, within 7 working days from the receipt of order by the user, if there is any problem or failure of the goods, the user can choose to replace or repair the same model after testing by the company's technicians and confirming that it is a machine/genuine problem. The company is not responsible for the freight fee of replacement, and the freight fee shall be borne by the customer. If the product of the same model is sold out or out of stock, you can exchange it for another product at the same price.

Product warranty terms

Within 12 months from the date, RHT Industries Ltd. will provide Hong Kong customers with free maintenance and warranty services. This warranty is subject to the following terms:

1.When customer enjoy the free maintenance and warranty service, customer must present the original purchase invoice (or other proof of purchase) to confirm the information, otherwise the company has the right to refuse to provide any maintenance and warranty services.

2.This service is only valid under normal conditions of use of the product.

3.Under reasonable circumstances, the company has the right to choose to repair or replace the accessories or the damaged parts.

4.Filter cartridges are not covered by the product warranty.

5.During the warranty period, the product must be transported by the user to our company's maintenance center for maintenance, and the relevant transportation costs are responsible of the user.

6.The warranty will be null and void in the following situation:

1.The purchase invoice has any non-approved deletions

2.The product has been modified or installed with any accessories by not approved third party.

3.The serial number has been altered, destroyed or deleted without authorization

4.Products are resold or transferred to others

The warranty does not include:

1.all shipping costs

2.Non-supplied accessories or any auxiliary devices (such as light bulbs, plastic or wear parts, etc.) (Note 1)

3.Man-made damage (such as improper power supply, installation not approved by the company, operation not in accordance with the instructions, negligent use, etc.)

4.Any damage caused by natural disasters or man-made accidents (including transportation and others)

1.Our company will not be liable for any direct or indirect losses caused by product failure.

2.This warranty applies to the Hong Kong Special Administrative Region.

3.Any terms are subject to change without prior notice.

4. RHT Industries Ltd. reserves the right of final decision on all disputes.

Note 1: For the definition and scope of accessories for individual products, please refer to the warranty instruction on the product.

Product Replacement Procedure

​The following product replacement procedures are only applicable to products sold online. Products purchased from any retailer must follow the retailer's product replacement and warranty procedures.

1. Request for replacement by email

You must submit a request for replacement of product by e-mail within 7 working days from the date of receipt, and send the replacement request to, and indicate your name, contact number, e-mail address, and delivery address in the e-mail. courier), invoice/online invoice number, product model and reason for replacement, if necessary, please attach photos to explain. (Note: Replacement requests must meet all conditions listed in the Product Replacement Policy)

2. Obtain the "Product Replacement Reference Number"

After our company accepts your replacement request, our staff will reply to you as soon as possible and give you a "Replacement Reference Number".

3. Return the replacement product to our company

Return the product to our company within 5 working days after receipt of the "Replacement Reference Number".

You can choose:

(a) Bring the replacement product in person

Customers must present the invoice/online invoice number and the "Replacement Reference Number" and bring the product to Rm B, 2/F, Goodwill Industrial Building, No. 36-44 Pak Tin Par Street, Tsuen Wan, NT, Hong Kong during office hours

(b) Return the returned product to the company through express

If it is delivered by express, please clearly indicate the "Replacement Reference Number" on the consignment, so that the company can arrange for the replacement of the product to the customer. Please note that the company does not accept freight collect mail.

The delivery address for the replacement of the product is: Rm B, 2/F, Goodwill Industrial Building, No. 36-44 Pak Tin Par Street, Tsuen Wan, NT, Hong Kong Note: - The replacement product must be returned to the company together with its complete packaging materials (including outer box, styrofoam, support paper, plastic bag, etc.). – When the company officially receives the replacement product, the replacement will be arranged. The filter element of the product will be returned to the original and will not be replaced. Customers can choose whether to send the filter element back. – The company reserves the right to make the final decision on exchange.

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Warranty Maintenance Terms

The following product replacement procedures are only applicable to products sold online. Products purchased from any retailer must follow the retailer's product replacement and warranty procedures.

1.All goods purchased on this website, whether local or overseas, are subject to the Hong Kong Warranty Terms.

2.Warranty period is 12 months.

3.Product maintenance and shipping arrangements:

Hong Kong local orders

Within 7 days of purchase: customer return and exchange the product in person or be responsible for the freight, and our company will replace them immediately or inspect and repair them free of charge.

During the warranty period (7 days after purchase): the customer will return the goods in person or be responsible for the freight, and the company will inspect and repair them free of charge. (The warranty terms are listed in the product warranty terms)

After the warranty period: the customer is responsible for the freight, inspection and maintenance costs (HKD$300).