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Adam Wong

@adamwong.bsky.social

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Adam Wong @adamwong.bsky.social · Nov 17

Hi everyone,

I am a Covid cautious Engineer. I own a small business of design and manufacture highly effective, rigorously tested, always evolving and competitively priced air purifying & measurement tools. (1/3)

Adam Wong @adamwong.bsky.social · Jul 9

You can do but it doesn't make much difference.

Adam Wong @adamwong.bsky.social · Jul 9

⏰Save 10% on ALL Airfanta products for 4 days only (July 8–11)! Shop:
air-fanta.com

AirFanta air purifiers

Official website of AirFanta air purifiers.

Adam Wong @adamwong.bsky.social · Jun 19

In here, the latest wave of COVID-19 has passed its peak at end of May. This wave is mainly caused by NB.1.8.1. This is the sixth wave as from the moment the ZERO Covid Policy is cancelled end of 2022.
Source: CDC
t.co/uAebeaKT7T

Adam Wong @adamwong.bsky.social · Jun 16

Any USB-A power plug can do.

Adam Wong @adamwong.bsky.social · May 22

At 30cm distance, facing the middle of 4Lite: 0 μg/m3

When positioned above or below the middle: 1 μg/m3

When shifted left or right: 2–6 μg/m3

This proves that correct positioning significantly improves performance—so always aim the center of 4Lite toward your face for the best results.
(2/2)

Adam Wong @adamwong.bsky.social · May 22

Why Proper Positioning of 4Lite Matters

I created a video demonstrating the importance of aligning the middle of 4Lite directly toward your face for optimal effectiveness.

Here’s what the test results showed when the background PM2.5 level was 14 μg/m3:

🧵(1/2)

Adam Wong @adamwong.bsky.social · May 9

Once you receive your PCR test report, the same app allows you to purchase appropriate medications for treatment.

I consider it very convenient. Whenever my family member is not feel well, I will arrange a PCR test for them.
Specially I can avoid taking kids to the hospital, where is quite risky.

Adam Wong @adamwong.bsky.social · May 9

🔻Extended Panel (RMB 159 / ~$22 USD) – Includes all pathogens from the Basic Panel, plus:
🔹Group A Streptococcus
🔹Bordetella pertussis (whooping cough)

This option also provides pathogen load (viral/bacterial concentration) in addition to positive/negative results.

Adam Wong @adamwong.bsky.social · May 9

🔻Basic Panel (RMB 99 / ~$14 USD) – Tests for:
🔹Flu A
🔹Flu B
🔹COVID-19
🔹Human rhinovirus
🔹adenovirus
🔹Mycoplasma pneumoniae
🔹Streptococcus pneumoniae
🔹Respiratory syncytial virus (RSV)
🔹human coronaviruses (non-COVID)
🔹Human parainfluenza virus
🔹Haemophilus influenzae

Adam Wong @adamwong.bsky.social · May 9

After collecting the samples, you place both swabs back into the provided test tube and return it to the worker. They will then deliver it to a lab for analysis. Typically, results are available on the app within three hours.

There are two testing options for respiratory pathogens:

Adam Wong @adamwong.bsky.social · May 9

Within two hours, a healthcare worker will arrive at your specified address with a sampling kit, which includes:

🔻A long swab for throat sampling
🔻A short swab for nasal sampling
🔻A test tube to keep the samples

Adam Wong @adamwong.bsky.social · May 9

How is COVID-19 testing conducted in China?

In China, affordable and fast PCR testing is available in major cities. Several companies provide this service, and the process is simple—just place an order through a mobile app.
🧵

Adam Wong @adamwong.bsky.social · May 9

I just saw the video. The key problem is how to direct the clean air to the nose.

Adam Wong @adamwong.bsky.social · Apr 3

I will write some articles of indoor air quality and air purifiers in the coming days. and here is the first one. You are welcome to discuss.
air-fanta.com/blogs/all/un...

Understanding Harmful Substances in the Indoor Air

Humans have long recognized the importance of clean drinking water. However, the significance of clean air has not yet been widely acknowledged by the general public. In reality, the air can contain a...

Adam Wong @adamwong.bsky.social · Mar 30

Yes. Please DM or email to [email protected].

Adam Wong @adamwong.bsky.social · Mar 30

Yes, we are going to produce them very soon.

Adam Wong @adamwong.bsky.social · Mar 30

There needs to be some room on its intake, but not much. you can put it on your knees with room in between.

Adam Wong @adamwong.bsky.social · Mar 11

Focus on educating people about lung tumors which you know and stop commenting on masks which you don't know."
Guess what? He deleted the video within a few hours.
A well-known doctor spreading disinformation can have a huge impact, and we need to stand up and call it out directly.

Adam Wong @adamwong.bsky.social · Mar 11

I left a comment saying:
"Please stop spreading nonsense. You’re an expert in lung tumors, but masks are in a completely different field, and it’s clear you haven’t studied them. I bet you don’t even know the national standards for masks or have ever read any of them.

Adam Wong @adamwong.bsky.social · Mar 11

Today, a doctor posted a video on Chinese TikTok claiming that masks can't prevent COVID or the flu. He's well-known and respected for his expertise in tumor assessment from CT images of pulmonary nodules and is considered an authority in that field.

Adam Wong @adamwong.bsky.social · Mar 10

Commercial companies often use this as a marketing gimmick, promoting H13 as the best without considering the impact on overall performance.(7/7)

Adam Wong @adamwong.bsky.social · Mar 10

I don’t believe H13 can provide the highest CADR in any case. H13 filters are ideal for devices like biosafety cabinets, where maximum single-filtration efficiency is required, but not for conventional air purifiers. (6/7)

Adam Wong @adamwong.bsky.social · Mar 10

I conducted a test on the 3Pro model, which achieved the highest CADR with E11 filters. While this may not apply to all air purifiers, for PC fan types, E11 filters are the most effective choice.(5/7)

Adam Wong @adamwong.bsky.social · Mar 10

We can't just say one filter level is better without considering these factors. The best filter level strikes a balance between filtration efficiency and the airflow rate drop due to the pressure drop from the filters. (4/7)

Adam Wong @adamwong.bsky.social · Mar 10

However, if you're making your own air purifier, filter choice becomes a key factor to achieve the highest CADR.
So, which filter is better? The answer depends on two main factors: the total surface area of the filters and the combined P-Q curve of the fans.(3/7)