First section: The precious 'ID card' and price basis of Nagqu cordyceps
The value of cordyceps is determined by multiple professional factors, with origin and specifications being the core. When providing quotations, Kam Hoi Shing pays special attention to the following elements:

1. Altitude of origin: Determines lineage and quality
Nagqu, Tibet and Yushu, Qinghai are recognized as top cordyceps production areas. Nagqu cordyceps, growing in the extremely pure high-altitude regions with an average elevation of 4,500 to 5,100 meters, is considered the "elite" among cordyceps.
- Advantages of Nagqu, Tibet: Nagqu cordyceps have a clean yellow color, plump and robust bodies, short and neat grass heads, and high content of active ingredients, making them the highest-priced variety in the market. The Nagqu region has implemented local legislation (such as the "Nagqu City Nagqu Cordyceps Protection and Management Regulations") to protect and regulate resources, further ensuring high-quality development and brand value.
- Market price reference: Top-grade wild Nagqu cordyceps (extra-large size, about 1,000-1,500 pieces per catty) can reach a price of RMB 300,000 to 400,000 per catty. According to the exchange rate of the day (1 RMB ≈ 1.08 HKD), this is approximately HK$324,000 to HK$432,000 per catty.
2. Size specifications: Size defines value
In the industry, specifications are measured by the number of pieces per catty (about 500 grams).
- The fewer the pieces, the higher the price: The fewer the number of pieces, the thicker, stronger, and rarer the cordyceps individuals. For example, cordyceps with 1000-1500 pieces per catty of extra-large specification are considered top-grade, while smaller cordyceps with 3000-4000 pieces per catty are relatively lower in price, approximately RMB 80,000 to 150,000 per catty (about HKD $86,400 to $162,000 per catty).
3. Quality Details: Dryness and Integrity
Even cordyceps of the same origin and specification, their quality details will affect the final buyback price:
- Dryness (fully dry and crisp): Cordyceps must be thoroughly dried (fully dry and crisp). Insufficiently dry "wet herbs" are prone to mold and deterioration, which severely affects the buyback price.
- Integrity: Cordyceps that are plump, free of breaks, mold, or impurities have better appearance. The length of the larval "floret" (grass head) should not exceed the body of the insect.
Second Section: Avoid Low-Price Traps—Integrity and Legal Protection of Professional Buyback Merchants
During the cordyceps buyback process, consumers must be vigilant against unscrupulous business practices and false product claims. We consistently adhere to honest operations and transparent appraisal, safeguarding the rights of customers in the Tuen Mun District.

1. Avoid the Risk of "False Product Descriptions"
Hong Kong's Trade Descriptions Ordinance (Cap. 362) strictly prohibits merchants from making false product descriptions. In the trade of precious medicinal materials, false descriptions are commonly seen in:
- Counterfeit genuine products: Using other cheap cordyceps (such as Cordyceps militaris, Cordyceps pupae) or even Chinese medicinal materials that contain no cordyceps at all to impersonate genuine cordyceps (Cordyceps sinensis) for sale. In the past, customs successfully prosecuted a Chinese medicine shop owner who supplied Chinese medicinal materials with false product descriptions, ultimately resulting in a community service order and compensation of HK$16,320 to the affected party [A5].
- Switching the cat for the prince: Similar to the case of selling snail meat as abalone [A3], during the buyback process, if the identification is unprofessional, low-grade cordyceps may be misjudged as premium products, or fake products may be mixed with genuine ones.
2. Professional Identification: Exposing Counterfeiting Methods
As a professional buyback merchant, identification services can instantly spot common low-price traps:
- Weight-increasing techniques: Beware of cordyceps treated with sulfur fumigation or inserted with iron wires to increase weight. Sulfur fumigation not only affects quality but long-term consumption may also pose health risks.
- Morphological identification: The abdomen of a genuine cordyceps insect has a clear 8 pairs of legs, with the middle 4 pairs being the most prominent and symmetrical. The cross-section should appear milky white and semi-transparent, with a black "digestive tube" running through the center. If you notice blurred rings, irregular leg numbers, or glue marks at joints, it may be a starch-compressed or spliced fake.
Third Section: Scientific Interpretation of Arsenic Content Controversy in Cordyceps
Many customers may be concerned about the "heavy metal" arsenic content in cordyceps. As professionals, we must provide interpretations based on modern science.

1. Arsenic mainly exists in a "non-toxic" form
Although many studies show that the total arsenic content in wild cordyceps (usually between 2.74 and 11.33 mg/kg) is generally higher than the national standard for arsenic in traditional Chinese medicine of 2 mg/kg, this does not mean it is highly toxic.
- Organic arsenic and inorganic arsenic: The toxicity of arsenic is closely related to its chemical form. Highly toxic is inorganic arsenic (iAs, including As(III) and As(V)), while organic arsenic (such as arsenosugars) has very low or almost no toxicity.
- Safety studies: Modern research shows that arsenic in cordyceps is mainly inlow-toxicity or non-toxic organic arsenic forms.The vast majority of studies indicate that theinorganic arsenic (iAs) mass fraction in cordyceps is below 2 mg/kg national standard.
- Insect-body enrichment characteristics: Arsenic is mainly concentrated in theinsect body partof cordyceps, while the arsenic content in the stroma (herb head) varies significantly. This may be related to the higher arsenic content in the soil of the cordyceps growth regions.
2. Potential pharmacological activity
Scientists speculate that the arsenosugars present in cordyceps may be a saferanticancer arsenic agentwith pharmacological activity. Therefore, regarding the arsenic toxicity of cordyceps, one should not consider only the total arsenic content but also focus on the content of the most toxic inorganic arsenic. Professional teams will ensure that the buyback cordyceps meet industry standards and have excellent quality.
Paragraph 4: Four Main Reasons Why Tuen Mun Customers Prefer Us
Kam Hoi Shing are committed to providing the most professional, transparent, and convenient buyback service to customers in Hong Kong, including those in Tuen Mun.
1. Professional appraisal to sell at the most ideal price
Our team of appraisal experts has extensive industry experience and can accurately determine the origin, specification grade, and true value of cordyceps. Whether your cordyceps are in gift packaging or have slight mold or breakage due to improper storage, we will explain the appraisal details in detail to ensure your prized items receive their deserved return.
2. Market-leading competitive buyback
We closely follow international and local seafood market trends, especially for top-grade Nagqu and Tibet cordyceps, offering buyback prices that are better than the industry standard.
3. Free on-site service in Tuen Mun
For the convenience of Tuen Mun customers, we provide free door-to-door buyback service across all 18 districts in Hong Kong. You don't need to go out in person; simply contact us via WhatsApp and complete the transaction easily.
4. Fast, secure, cash transactions
Once both parties agree on the quotation, we promise immediate cash transactions. We strictly protect customer privacy and transaction details, making the whole process safe and confidential.
Summary
Cordyceps buyback is a professional field, and it is important to choose a buyback company that is professional, trustworthy, and knowledgeable about market trends.We With a deep understanding of the quality of Nagqu cordyceps, vigilance against market pitfalls, and a commitment to customer integrity, we are the preferred partner for residents of Tuen Mun and customers across Hong Kong to sell their cherished products at high prices.
Please note: The RMB to HKD prices in this article are estimated at an exchange rate of 1 RMB = 1.08 HKD. The actual rate may fluctuate and is for reference only.
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Attention Tuen Mun residents! Don't let your precious cordyceps lose value in your cabinet. Contact us now for a free professional appraisal and enjoy a high-priced cash buyback service.
Cordyceps appearance evaluation extension
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- To determine if dried abalone is suitable for sale, first read:Why is abalone so expensive?
Cordyceps buyback Q&A
Q: What are the differences between Nagqu, Tibet, Yushu, Qinghai, and Ganzi, Sichuan cordyceps?
Answer: The price gradient of the three major cordyceps producing regions is very clear — Nagqu cordyceps ranks first in buyback price because it is produced at the highest altitude (above 4500 meters) and has the rarest yield. Yushu cordyceps has stable quality and high cost-performance ratio, ranking second. Ganzi cordyceps grows at a lower altitude and has moderate quality. The appearance of the three is similar and requires an expert to identify.
Question: How to distinguish real and fake cordyceps?
Answer: Key points to identify real cordyceps: first, count the legs — there should be 8 pairs, with the middle 4 pairs being the most distinct; second, look at the grass head — it should grow from the center of the insect head; third, smell — it should have a natural mushroom fragrance; lastly, break it and observe — the inside should be light yellow-white. In the market, there are fake cordyceps made by flour pressing or molds, so be careful.
Question: How many grades are there for cordyceps?
Answer: The grading is based on "pieces per catty." Experts judge the size of cordyceps by "pieces/catty": 2,000 pieces/catty are the thickest cordyceps and have the highest buyback price; 3,000–4,000 pieces are medium-high quality; 5,000–6,000 pieces/catty are standard grade. The fewer the pieces, the higher the unit price.
Question: What is the best way to store cordyceps?
Answer: Seal in a glass jar with food-grade desiccant and keep in a cool, dry place away from light. It is recommended to take it out for ventilation for one day every six months. The quality remains stable within 5–8 years, but components will decline if stored over 10 years.
Question: Have idle cordyceps at home and want an appraisal?
Answer: WhatsApp photos to 69035182, including the overall cordyceps and details (grass head, insect body), and receive a preliminary appraisal within 30 minutes.
Materials to prepare before cordyceps appraisal
Before cordyceps appraisal, it is recommended to take clear photos of the insect body, grass head, broken branches, and outer box information, and send them via WhatsApp for a preliminary judgment.
Kam Hoi Shing dried-seafood buyback
WhatsApp:(852) 69035182
If the goods are well-preserved, further authentication and cash settlement can be arranged according to market prices.