Frequently Asked Questions
Find answers to commonly asked questions about our products,
how to use them and much more.

General

What are the benefits of membership?

If you become a Sinotex member, you will receive 25 points and receive various discount benefits.

Can I apply a coupon to an item I've already ordered?

Once an order is placed at checkout, it's placed in the fulfillment queue almost immediately. Due to this short processing time, once an order has been placed, it is not possible to modify it anyway. If you are unable to redeem your coupon for another order before it expires, please contact our customer care team here.

Why didn't I make a purchase and receive points right away?

When you receive a delivery notification for your order, you will earn points. If you receive a delivery notification and your points have not been delivered, please contact customer service.

I have placed an order, can I change the shipping address?

If it is confirmed that the product is ordered by the customer before ordering and shipping, we can change it and help you ship it, If the product is in the process of confirming the order and preparing to be shipped, please understand that it may be shipped as the product you have previously purchased. Please change the product or the shipping address.

My product is in transit, can I cancel it?

The product is currently in transit and cannot be cancelled during delivery, so we can help you return the product after you receive it. (Products that are already in transit cannot be returned, and can be returned after checking with the driver when the delivery address arrives.) Please note that returns due to customer change of mind will be subject to round-trip shipping costs (6,000 won).

Mask

There are many types of masks, but which one is the thinnest?

The thinnest and most comfortable to breathe range is the PremiumLight range. There are a total of 4 products that we sell. 1) PremiumLight (This is an upgraded product line of the existing premium product line, it is the thinnest and comfortable product line when breathing like a dental mask) 2) Premium 3) KF94 4) KF80 (the thinnest in KF products)

Is there a certificate related to the non-detection of environmental hormones? (Masks & Filters)

The water filter has obtained the 'KC Hygiene and Safety Standard' certification that 45 harmful substances such as benzene and phenolics are not eluted. In addition, it has been confirmed that it is not detected in the bisphenol test by an authorized certification body. (BPA Free) In addition, all 12 volatile organic compounds (VOCs) were found to be non-detectable during the detection test.

Is it an additive-free mask?

The ePTFE filter used in the mask is produced in-house and is produced with an additive-free process, so you can use it with confidence. The non-woven fabrics purchased and used separately are made of the highest quality domestic products. All ingredients used in fabrics are checked through the Ingredient Analysis Table (MSDS) and managed through separate import inspections. Apart from this, the UV sterilization process and fine dust inhalation process are added to manage the product safely, so please use it with confidence.

How exactly does the Premium Mask differ in performance compared to the KF94?

The Premium Mask has been tested by the Korea Authorized Analysis Institute (KOTITI) based on KF94 and has passed the test with excellent performance. Overseas China KN 95 certification (KF94 equivalent).

Difference between Premium and Premium Lite?

Premium Light is an upgrade of the existing premium product to make it thinner and easier to breathe. While using ePTFE, a high-tech high-tech material used in the past, Synopec's self-developed high-tech It is improved by more than 20% compared to the existing product by applying the elongation method, and it is released with a total volume of 35g and a facial inspiratory resistance of 12~15Pa, making it thin and easy to breathe. If you spend a lot of time indoors, adults with weak lung breathing, children, or have difficulty breathing with conventional masks, please experience the comfortable breathing of Sinotex Premium Light products.

Does it also have sun protection?

As for UV protection products, black products have a 99% protection effect. Ultraviolet light has a shorter wavelength than ordinary visible light, so its transmittance is affected by color. In general, pink products have a lower blocking rate than white or other colors.

The mask smells

In the case of odors, this is not a problematic product. The Sinotex mask filter is an extremely odorless method. It is made, but sometimes the outer fabric of the lining does not properly volatilize the odor, so there is a slight odor. We're constantly taking action, and now 99% of our products are made odor-free. It is recommended to ventilate it once when using it, and if it is not possible to use it due to strong odor, please contact customer service and we will help you.

Shower Filter

Is the water filter certified?

Our water filter is KC certified and FDA registered as a water purifier. However, it is delayed due to a change in the specification of the water filter product (addition of a rotating joint).

Black water comes out of the carbon filter

Connect the filter body, let the water flow for about 1 minute, and connect the head. If you install it as it is, black carbon will get stuck in the head filter, so please be careful. In addition, the head (PES filter) part is responsible for removing bacteria and ultra-microplastics, but rust and residue are filtered out from MDA and carbon block activated carbon, so please check it when installing.

What is the after-sales service period?

Under normal use, if the product is defective, it can be exchanged within 2 months

Can I just drink filtered water?

Our water filter is made of carbon filter and MDA filter in the case of the main filter, and it removes rust, residue, and residual chlorine. The PES filter is a filter that removes bacteria and ultra-microplastics, and it must be purified with a filter set to be purified and drinkable.

The water pressure has weakened.

In the case of the head filter, it is a high-performance filter that filters up to 0.65 micrometers in size. It may change color due to a foreign substance and need to be replaced, but there is no significant color change, but the water pressure may be weakened due to the foreign substance inside, which can be solved by replacing the filter.

Is Fukushima's contaminated water filtered by a Sinopec filter?

Activated carbon materials such as carbon blocks in water filters have the ability to adsorb radioactive substances such as tritium, but the removal capacity may vary depending on the contaminated water. However, the tap water supplied to our homes is water that has been tested for water quality in Korea, so please rest assured in that area.

Water counts in the joints/parts.

During the assembly process, please adjust the height so that the water does not rise from the silicone O-ring. The height of the silicon is right If you don't, the water can be counted. Leaks are often caused by missing silicone rings, so please insert additional silicone rings and assemble them.

Can it be installed on an integrated kitchen faucet (turtle neck faucet) and an integrated sink faucet that cannot be removed from the drain?

When you said that it is a goose carpenter faucet, I understand that there is no part where the drain cannot be separated. If there is detachable plastic in the faucet, you can use a coin to unscrew it. Compared to the threads of the 8 adapters that are enclosed, if they are the same, they can be connected, and if they are not the same, they cannot be connected. If, as you said, it is not disconnected and there are no screws inside, please note that not only our products but also other companies' products cannot be connected

What is the replacement interval?

The average water filter is 1~2 months for medium size water filter 2~3 months for large water filter It may vary depending on the water quality of each household and the number of people used. If the filter turns yellow or the water pressure is unusually weak, replace the filter.

Water Purifier

I used a water purifier that doesn't use electricity, but can I really use clean water without the need for electricity?

The Synotex water purifier comes in two types, large (555g) and medium (425g), and in the case of medium-sized products, it is easy to take with you when traveling. Due to its size and weight, you can use safe and clean water everywhere even when traveling in Southeast Asia.

Which water filter or water purifier should I buy?

We recommend a water purifier in the kitchen and a water filter in the bathroom.

The lid of the ESG filter cage does not close

It is an eco-friendly product and does not use adhesives. When the outer cap is fastened, it adheres to the pressure of the cap, so please use it with confidence.

What's the difference between medium and large?

Product size difference, filter function is the same.

What should I do if I can't remove the filter when I replace it?

If you can't remove the filter when you replace it, it won't open due to pressure, so you can easily remove it by soaking it in warm water for about 5 minutes and then removing it.

The parts in my faucet don't fit.

If the parts do not fit, please take a picture of the existing sink faucet and contact the CS center with the photo. However, due to the variety of faucets, it may be difficult to install about 10% of faucets. If you did not use the filter, you can return it, so please contact customer service.

Does it filter out chlorine, carcinogens, and microplastics?

The Synotex water purifier consists of 3 stages, and the block activated carbon filter that removes chlorine and heavy metals is NSF certified. The filter's overall performance has resulted in a water-related and significant perfluorinated compound (PFOS) zero detection rating than RoHS. In addition, it has been registered as an FDA water purifier, and it is a safe product that filters more than 99% of bacteria and ultra-microplastics with a PES filter of 0.45 micrometer size, so please use it with confidence~