Foshan Weller Moisture Proof Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of moisture absorbing silica gel in China. If you're going to wholesale high quality moisture absorbing silica gel, welcome to get free sample and discount information from our factory. We also accept customized orders.

China Moisture Absorbing Silica Gel manufacturers and suppliers since 2009, with our own factory. Accept wholesale, OEM, ODM orders. Provide custom solutions.

Moisture Absorbing Silica Gel Manufacturers

Let the highly efficient desiccant provide all-weather moisture protection for your items!

Noted: We can custom for specific applications.

Specification/Parameter	Description
Product Type	Moisture Absorbing Silica Gel
Material	Silicon Dioxide(SiO₂)
Appearance	Transparent, solid granules or beads
Particle Size	1–3 mm, 2–4 mm, 3–5 mm; or custom sizes
Moisture Absorption Capacity	Absorb 30%–40% of its weight in moisture
Relative Humidity Range	Effective within 20%–90% relative humidity
Heat Resistance	Stable up to 200℃
pH Range	4–8
Application Temperature	Best performance between -40°C to 200°C
Packing Options	Individual sachets, bulk beads, or customized packaging
Color Variants	White (non-indicating) or orange/blue (indicating types that change color)
Usage	Moisture control, corrosion prevention, drying substances

Moisture Absorption Capacity

1. Static Rate

At RH=20%-40% (low humidity), this moisture absorbing silica gel can absorb 8%-12% of its weight.
At RH=60%-80% (moderate humidity), the capacity increases to 20%-30% .
At RH>90% (high humidity), the capacity reaches 35%-40%.

2. Dynamic Speed

In a sealed environment, this desiccant can absorb >90% of ambient moisture within 24~48 hours. It varies based on space volume and humidity.

Usage Recommendations for Common Scenarios

Small Containers (e.g., shoebox, camera bag): Use 10-20g per 1-2L (e.g., 2×5g packets)
20ft Shipping Container (28m³): Require 10-15kg (distributed evenly or hung).
Food Packaging (e.g., 1kg dried goods): Add 5-10g food-grade silica gel (FDA-compliant)

Product Features

1. Strong absorption. Its rate is as high as 30%-40% (25℃, RH=90%).

2. It complies with international safety standards, such as FDA and SGS. Non-toxic and odorless material. It can directly contact food and medicine (if using food-grade silica gel).

3. After moisture absorption is saturated, it can be regenerated by heating (oven heating, microwave heating, or sunlight exposure). It can be recycled many times. Economic and environmentally friendly.

4. High temperature resistant (Up to 200℃) and low temperature resistant(-40℃). This moisture absorbing silica gel is insoluble in water and general solvents. The chemical properties are stable. It does not corrode items.

5. We provide a variety of packaging forms, such as small packets and bags (1g-1000g), canisters, hanging bags, etc. to meet the needs of different scenarios.

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About Us

Foshan Weller Moisture-Proof Technology Co., Ltd. was established in 2009. We are a professional manufacturer and supplier in China, with an factory of over 8,000 square meters.

Product Range	moisture-proof, mildew-proof, odor-proof and rust-proof products.
Applications	designed for residential, commercial and industrial use. used for product packaging, transportation, and warehousing in different industries.
Service	Accept wholesale, OEM, ODM orders; Provide custom solutions.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.

Product Details and Summary

Product Type	silica gel desiccant (moisture absorbing material)
Classification	1. non-indicating silica gel 2. indicating silica gel (1) blue indicating silica gel (blue to pink; containing cobalt chloride) (2) orange indicating silica gel (orange to green; cobalt free and environmentally friendly)
Indicator Function	You can choose silica gel with color indication function, to achieve a more convenient reminder function.
Main Components	silicon dioxide (SiO₂); Content ≥ 98%
Appearance	granular, spherical, powdered, beads crystals, sand, etc.
Colors	transparent, translucent, white, blue, or orange
Particle Size	1-3mm, 2-4mm, 3-5mm; or custom sizes
Bulk Density	approximately 700-800 kg/m³
Surface Area	700-800 m²/g
Pore Volume	0.4-0.8 cm³/g
Applicable Humidity Level	20%-90% RH
Operating Temperature Range	-40 ℃ to 200 ℃ (long-term stability)
Maximum Moisture Absorption Rate	30%-40% of its own weight
Physical Properties	stable internal structure. no expansion or liquefaction. not easily crushed. dust-free.
pH	4-8
Chemical Properties	chemically inert; It will not chemically react with the inside products.
Human-Friendly Feature	odorless and non-toxic. It meets food grade standards.
Environmentally Friendly Feature	using packaging paper and materials that are biodegradable within two years. It can be discarded for use as fertilizer.
Regeneration Temperature	80℃-150 ℃ ( It can be reused after heating for 2-4 hours.)
Packaging Material	breathable material with strong sealing properties. You can customize packaging materials according to your needs.
Printing	You can custom printed text, pictures, logo for better brand images.
Packaging Capacity	1g, 2g, 5g, 10g, 50g, 100g, 500g, 1000g; or custom capacity
Storage	It should be tightly sealed and stored in a cool, dry place; away from direct sunlight and chemical pollution.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.