How to Determine Quality?

1. Before the transaction, you can contact our sales representative to request a quality inspection report. Our company guarantees the authenticity of the data in the quality inspection report. If your testing results do not match the quality inspection report, we will unconditionally accept returns and provide a refund. 2. Before the transaction, we can provide a small sample for testing (free samples are only available to customers with a genuine need; samples are generally provided to factories, but not to reagent companies).

What’s your delivery time after you get our deposit?

1-12 tons usually delivery time is 3 to 7 days after get the deposit. 12-28 tons usually delivery time is 7 to 10 days after get the deposit. > 28 tons usually delivery time is 10 to 15 days after get the deposit.

What’s your terms if we want to be your exclusive agency in our country?

Once your monthly order quantity up to 28 tons you can to be our exclusive agency.

Can your technicians come to our local place to provide technical support?

Yes, when you need our technicians can go to your place to provide technical support.

Products - Dongyuan Shengda

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Your Trusted Cellulose Ether Supplier in China

Dongyuan Shengda is a professional cellulose ether manufacturer with 16 automated production lines and an annual output of 60,000 tons, ensuring a stable supply for your business. With ISO9001-2015 certification, our high-quality products meet international standards, helping you achieve consistent project results. We offer HPMC, HEMC, and HEC at factory prices, supporting your cost-efficiency. Our R&D facility can customize HPMC formulas to meet your exact specifications for different application needs. Our products are popular in Asia, Europe, Latin America, the Middle East, and Africa. Contact us now to receive a personalized quote and discover how our solutions can benefit your business.

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Hydroxypropyl Methyl Cellulose - HPMC

Brief: Appearance – product is a white or off-white powder, odorless and non-toxic. It can form a transparent colloid in aqueous solution.

Our construction grade HPMC mainly suitable for: tile adhesive factories , putty powder factories, plaster factories , dry mix mortar factory, paint factory etc.

Hydroxypropyl methyl cellulose is produced by selecting highly pure cotton fiber as raw material and specially etherifying it under alkaline conditions. It has the characteristics of thickening ability, salt resistance, low ash content, PH stability, water retention, excellent film-forming properties, and extensive mildew resistance, dispersion and adhesion.

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Hydroxyethyl Cellulose - HEC

Brief: Our Hydroxyethyl Cellulose Ether (HEC) products are divided into two major categories: construction-grade and daily-chemical-grade. In order to better serve our customers across various projects, we have conducted in-depth research and development on our construction-grade HEMC. This has led to the production of specialized cellulose ether variants for applications such as putty, mortar, tile adhesive, gypsum Etc.
Furthermore, we leverage the advantages of our manufacturing facilities. We can customize the production of methylcellulose ethers based on your geographical location, construction environment, and specific application requirements.
If you are looking to buy HEC, you can discuss it with our experts, then to get a better solution before buying. We provide free samples for testing.

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Hydroxyethyl Methyl Cellulose - HEMC

Brief: Hydroxyethyl methyl cellulose is a water-soluble cellulose mixed ether that has the properties of both CMC and HEC. It has high hydration binding capacity and good flocculation on suspended solids. In addition, hydroxyethyl methylcellulose also has the functions of thickening, adhesion, emulsification, film formation, suspension, dispersion, water retention and providing protective colloid. It is soluble in hot or cold water, does not precipitate at high temperatures or boiling, and has a wide range of solubility. Hydroxyethyl methyl cellulose contains hydroxyethyl groups, so it has good anti-fungal ability. It has good viscosity stability and anti-fungal degeneration during long-term storage.

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20+ Years of Production Experience

Decades of specialized experience in cellulose ether development and manufacturing.
Advanced German Production Lines

We use imported automated equipment to ensure accuracy, consistency, and efficiency.
Independent In-House Testing

Each batch is rigorously tested by professional technicians to ensure product quality and consistency.

FAQ

Q How to Determine Quality?

A 1. Before the transaction, you can contact our sales representative to request a quality inspection report. Our company guarantees the authenticity of the data in the quality inspection report. If your testing results do not match the quality inspection report, we will unconditionally accept returns and provide a refund.
2. Before the transaction, we can provide a small sample for testing (free samples are only available to customers with a genuine need; samples are generally provided to factories, but not to reagent companies).
Q What’s your delivery time after you get our deposit?

A 1-12 tons usually delivery time is 3 to 7 days after get the deposit.
12-28 tons usually delivery time is 7 to 10 days after get the deposit.
> 28 tons usually delivery time is 10 to 15 days after get the deposit.
Q What’s your terms if we want to be your exclusive agency in our country?

A Once your monthly order quantity up to 28 tons you can to be our exclusive agency.
Q Can your technicians come to our local place to provide technical support?

A Yes, when you need our technicians can go to your place to provide technical support.
Q Do you supply customized service?

A Yes, we do.

Our Blogs

Hydroxypropyl Methylcellulose (HPMC) Properties, Uses, And How To Choose The Right Grade for Construction.jpg

HPMC Vs HEMC in Waterproofing Slurry: Enhancing Hydrostatic Pressure Resistance

Discover how HPMC and HEMC influence water retention, rheology, and hydrostatic pressure resistance in cementitious waterproofing slurries. Learn when to choose each cellulose ether, how to optimize dosage, and how to design durable, high‑performance waterproof coatings for demanding projects.

04 June 2026

HPMC Applications In Construction And Personal Care.jpg

Hydroxypropyl Methyl Cellulose HPMC And MHEC Applications in Construction And Personal Care

Hydroxypropyl Methyl Cellulose (HPMC) and Methyl Hydroxyethyl Cellulose (MHEC) are essential in modern construction and personal care. Discover how expert‑grade cellulose ethers improve water retention, workability, and sustainability, and why partnering with a specialized Chinese manufacturer matters.

05 June 2026

HEMC Vs. HPMC in Lightweight Mortar: Maintaining Density Consistency

HEMC and HPMC both play important roles in lightweight mortar, but they behave differently under heat, moisture, and production stress. This article compares their performance, explains how they affect density consistency, and helps manufacturers choose the right cellulose ether for stable, high-quality mortar.

29 May 2026

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FAQ

Q How to Determine Quality?

Q What’s your delivery time after you get our deposit?

Q What’s your terms if we want to be your exclusive agency in our country?

Q Can your technicians come to our local place to provide technical support?

Q Do you supply customized service?

Our Blogs

HPMC Vs HEMC in Waterproofing Slurry: Enhancing Hydrostatic Pressure Resistance

Hydroxypropyl Methyl Cellulose HPMC And MHEC Applications in Construction And Personal Care

HEMC Vs. HPMC in Lightweight Mortar: Maintaining Density Consistency

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