Info Center
How to Select Packaging Materials for Desiccants?
Desiccant packaging materials come in a wide variety, each differing in strength, breathability, heat-sealing capability, dust resistance, temperature tolerance, and cost. When making a selection, in addition to ensuring effective moisture protection and content safety,…
Causes and Solutions for Mold Spots on Electroplated Parts
Through extensive research and analysis, we have identified two primary causes of mold spots on electroplated parts: irregularities during the electroplating process (production stage) and improper handling during transportation and storage (logistics and storage stage)…
Why Must Only 3A Molecular Sieve Desiccants Be Used in Insulated Glass?
For insulated glass, because it requires the absorption of moisture, only water molecules can enter its channels, while other molecules in the air are blocked. Water molecules measure 2.8 angstroms (1 micrometer = 10,000 angstroms), while nitrogen, oxygen, and argon in …
What is the Difference Between Montmorillonite Desiccants and the Montmorillonite Used in Pharmaceutical and Cosmetic Industries?
In industries such as pharmaceuticals and cosmetics, the purity requirements for montmorillonite are very high (above 98%), which is closer to the definition of montmorillonite in the scientific research field. In the non-metallic mineral industry (such as the desiccant…
Four Common Yet Incorrect Methods for Testing Moisture Absorption Rate of Desiccants
Incorrect Method 1: Throw it directly into liquid water and check after a few hours to see if it has become “fully saturated”. Incorrect Method 2: Take the sample and pour water directly onto it to observe whether it absorbs water quickly. Incorrect Method 3: Open the…
What Type of Container Desiccants Can Meet the Needs of Sea Cargo Shipping?
Calcium chloride or magnesium chloride-based container desiccants feature high moisture absorption capacity, fast absorption speed, long-lasting effectiveness, a wide working temperature range, leakage-free performance, resistance to breakage, and compliance with enviro…
Question:?Why Does the Water in My Dehumidifier Box Turn Yellow After Absorbing Moisture?
Answer: The yellowish color of the solution you observed is a typical characteristic of calcium chloride-based desiccants and does not indicate a quality issue. The light yellow appearance of the calcium chloride solution is primarily related to the following factors: n…
Question:?At what level of oil content in food is it appropriate to use triple-protection oxygen absorbers?
Answer: The core scenarios mandating the use of the triple-protection type are: 1. High-oil or high-moisture foods, and 2. Direct contact with food during application. Conventional high-efficiency oxygen absorbers may only be used when they are physically separated from…
Question: Is My Dehumidifier Bag Defective? Why Does the Collected Water “Freeze”?
Answer: When anhydrous or dihydrate calcium chloride in dehumidifier bags/boxes absorbs moisture, it first dissolves into a saturated solution that flows into the collection area. If the ambient temperature drops below the solution’s saturation point, the solution bec…
Question:?What are the differences between your calcium chloride desiccants and SUPER DRY Desiccants?
Answer: SUPER DRY is an international company with foreign investment background and extensive industry experience, while CHUNWANG is a domestic enterprise listed on the New Third Board (Stock Code: 831880), possessing large-scale production facilities and a comprehensi…
Question:?What is the service life or shelf life of desiccants?
Answer: 1.Unused state (inventory storage): The quality assurance period for desiccants is typically one year. 2.In-use state (placed inside packaging): The actual effective protection duration (i.e., the time until moisture absorption saturation is reached) is not a fi…
Question:?How Should Used Desiccants Be Disposed Of?
Answer: Used desiccant is typically non-toxic and harmless, and in most cases, can be disposed of as general waste. Within the European Union, the disposal of desiccant waste must comply with relevant regulations, particularly EU Directive 91/689/EEC (on hazardous waste…
A New Chapter: Chunwang’s Self-Built Industrial Park in Heyuan Officially Opens
December 13, 2025. Leaders from all departments of Chunwang gathered in Heyuan, Guangdong, to tour the company’s newly completed self-built industrial park. This marks a solid and crucial step forward in Chunwang’s development—a true “home” for the Chunwang team has n…
Announcement on Convening the First Extraordinary Shareholders’ Meeting of 2025
All shareholders of the Company registered with China Securities Depository and Clearing Co., Ltd. at the close of business on the record date (details as per the table below) are entitled to attend the Shareholders’ Meeting (Investors who purchase shares on the record …
Announcement on Resolution of the 4th Board of Directors’ 10th Meeting
In light of the official implementation of the “Company Law of the People’s Republic of China” (Revised 2023, hereinafter referred to as the “New Company Law”) on July 1, 2024, and in accordance with the unified arrangements of the China Securities Regulatory Commission…
Announcement on Resolution of the 4th Supervisory Committee’s 7th Meeting
In light of the official implementation of the “Company Law of the People’s Republic of China” (Revised 2023, hereinafter referred to as the “New Company Law”) on July 1, 2024, and in accordance with the unified arrangements of the China Securities Regulatory Commission…
Announcement on Resolution of the 4th Supervisory Committee’s 6th Meeting
In accordance with relevant regulations, the Company’s?*2025 Semi-Annual Report*?was reviewed, and the following opinions were issued:(1) The preparation and deliberation procedures of the Company’s 2025 Semi-Annual Report comply with all applicable laws, regulati…
Announcement on Resolution of the 4th Board of Directors’ 9th Meeting
In accordance with relevant regulations, the Company has prepared the 2025 Semi-Annual Report based on its operational performance in the first half of 2025. For details, please refer to the?*2025 Semi-Annual Report*?(Announcement No.: 2025-016) published by the Compa…