FAQs

1. When was MUHU founded?
Founded in 1988, MUHU has a history of over 30 years.

2. What products or services does MUHU provide?
The business scope of MUHU mainly consists of three parts:
A. Concrete admixtures and other construction materials. In addition to products and sales service, MUHU also provides product formula transfers, technical training, and production facilities re-engineering. Complete customer satisfaction is our business goal.
B. Production know-how transfer services for products such as PC/SNF Superplasticizer.
C. Technical cooperation for new products. Heatless production system of new generation of PC services as one example.

3. What are some of the patents or certificates that  MUHU has received?
a. MUHU “generation polycarboxylic type” won the Advance of Science and Technology Award of Beijing in 2008．
b. MUHU was certified by ISO9001 in 2004．
c. MUHU Polycarboxylic-type high performance water reducer was granted as a “New high-tech product” by Beijing Government in 2003．
d. MUHU was approved as a high-tech type business in Beijing in 2002．
e. MUHU was certified by ISO9002 in 2000．
f. MUHU products as accredited as National Quality Trustworthy Products in 1998．
g. MNC—D water repellent agent was awarded as key project by China Ministry of Construction in 1997．
h. MUHU products won the gold medal of the First Chinese Gold Model Technical and Product Fair in 1994.
i. MNC—C Anti-freezing admixture won the Advance of Science and Technology Award of Beijing in 1993．

4. Which Chinese projects have MUHU products been used at?
Excellent service makes MUHU a partner that customers can count on. Our products have been sold across the country and presently, worldwide. Some important buildings and national projects here in China that have used our products include: Beijing West Railway Station, the Beijing-Shenyang High-way, Three Gorges Dam project, Qinghai-Tibet Railway and etc.

5. Where are MUHU customers from?
Excluding domestic customers, MUHU products are widely used in large precast factories, cement product plants, civil and industrial construction projects, railway construction, hydraulic projects, bridges and skyscrapers etc. MUHU’s customers cover every corner of the globe from across Asia, Middle East, North, South and Central America,  Europe and Africa.

6. There’re plenty of construction material manufacturing giants in the global market. How can MUHU compete with them?
MUHU attracts customers by our established reputation, advanced production systems, large production capacity, wide product range, excellent quality and best of our, our reliable and professional technical support.  MUHU’s performance and reliability are best reflected in the long list of customers using our products and services for many years.  Our customers and partners’ satisfaction is MUHU’s satisfaction.

MUHU Products

1. Some of MUHU admixtures are in powder form. Can I get specific instruction on how to use?
To make transport convenient, Most of MUHU admixtures are provided in powder form which should be dissolved into water by a certain ratio before use. Please don’t worry about usage. MUHU is proud of a professional and committed technical team who will give free guidance before, during and after sales upon request. Whenever there’s question, please feel free to let us know.

2. Can I have some samples first to do lab tests and trial use?
MUHU favors the practice to provide samples for lab tests and trial use first as construction material performance is closely related to local conditions. MUHU will give technical support during tests and help analyze test results.

3. How many samples can I ask from MUHU each time?
Three samples. MUHU will provide 500g of each sample free at ex-factory cost while customer covers DHL express charges and DGM (Dangerous Material) inspection which is required by airline for all chemical products.

4. How can I pay express charges for samples?
A. If customers have international express account such as DHL/TNT/UPS/FEDEX, samples can be sent on collection basis.
B. Express charges can be transferred to our bank account. Here’s our bank account information.
Beneficial name: MUHU (CHINA) Construction Materials Co., Ltd
Advising Bank: Industrial and Commercial bank of China, Beijing
Municipal Branch, Beijing, PRC
Account No: 0200012129116002441
Swift code: ICBKCNBJBJM
C. Express charges can be transferred through PayPal.

5. What payment term does MUHU accept?
Generally, we accept 100% irrevocable L/C at sight and 100% T/T in advance. If there’s special occasion on customer side, we’d leave it to decide after fully discussion with customers.

6. What’s the minimum order quantity?
One ton.

7. What’s the common purchase quantity of customers?
One full container load for either one product or a few products.

8. How many types of polycarboxylate superplasticzer are there in market?
Two series, PC and PCE. PC has both powder and liquid form, while PCE is only available as liquid.

PC liquid has different concentrations. Most commonly used ones are 30%, 40% and 50%. PC can also compound with other components to make retarding admixture that’s specially used in ready mix concrete.

MUHU provides production know-how transfer on PC. As for newly developed production system of PCE, MUHU offers project cooperation opportunity.

9. What are the most important test items that I should pay attention to during test of superplasticizers?
A. Water reducing effect
B. Slump
C. Cement Paste Flow
D. Strength

10. What should I do or notice before product use?
Lab tests are recommended before product use. As cement type and aggregate may be different, tests should be conducted to determine an appropriate dosage before using in large scale.

11. What should I keep in mind during lab tests?
A.  Read MUHU product brochure carefully, especially Technical Data Sheet.
B.  Adjust dosage according to technical requirements.
C . As superplasticizer performance is closely related to cement type, aggregate, ambient temperature and job-site conditions, a highly simulative lab testing condition is necessary to ensure a valuable test result.
D.  Please contact MUHU technical specialists once there’s any question during test. Email address is intl@muhuchina.com.
E.  After finishing tests, send test reports to MUHU for analysis and feedback.

12. What’s the recommended dosage of PC?
The recommended dosage of PC-Powder is 0.2% by weight of cementitious materials. That of PC-Liquid (50%) is 0.4% by weight of cementitious materials. However, lab testing is highly recommended so as to optimize dosage.

13. How should I use PCP and PCL?
They can be applied directly or after dilution to a certain concentration. For example, 1kg of PCL(50%) can be dissolved into 4kg of water to make a 10% concentration liquid. The dosage thereafter is 2% by weight of cementitious materials.

PCP and PCL be used as raw material to compound admixture that’s specially used in ready mix concrete. Here’s the general formula to make 1ton of RMC-use admixture.
PCL(10%): 980kg
Retarding Agent (MNC-BS/MNC-PS): 15kg-20kg
Air Entraining Agent (MNC-AE2): 2kg

The recommended dosage of RMC-use admixture is 2%-2.5% by weight of cement.

Note: The material consumption in this formula can be proportionately increased or reduced according to required quantity of finished product.

14. How many types of Naphthalene based Superplasticizer are there in markets?
Naphthalene Superplasticizer has two grades according to different sodium sulfate content, UNF-5 (Na2SO4 18% max) and FDN (Na2SO4 5% max). We can also produce FDN with a Na2SO4 content of 3% at maximum according to customer request,.

Owing to good compatibility with cement and other admixtures, naphthalene superplasticizer can compound with other components to produce concrete admixtures of specific features, such as high range water reducing and air-entraining agent, high range water reducing and accelerating agent, high range water reducing and retarding admixture, pumping aid admixture and so on.

15. What’s the similarity and difference of UNF-5 and FDN?
Both of them have high water reducing ability, bring good fluidity and high concrete strength. Meanwhile they have good compatibility with varieties of cement.

Compared with UNF-5, FDN is more resistant to bring crystallization in harsh cold winter time. Besides, for application in textile and pigment industry, FDN works as a good dispersant.
16. Can naphthalene superplasticizer be used as a raw material to compound admixtures? Where are the admixtures mainly applied?
The two grades of naphthalene superplasticizer can be used directly as superplasticizer or after compounding with other components. MNC-A1, high range water reducing and accelerating admixture, is used when ambient temperature is minus 80C at lowest. MNC-C15, high range water reducing and anti-freezing admixture is used when ambient temperature is minus 200C at lowest. MNC-HAJ, high range water reducing and air-entraining agent, is widely applied in road construction and hydraulic projects. MNC-D1, high range water reducing and water repellent admixture, is for use in basements, swimming pools, kitchens, lavatories and so on. High range water reducing and retarding admixtures are often used in ready-mix concrete.

Manufacturing Know-how Transfer

1. What production lines does MUHU have? What’s the corresponding production capacity?
With separate liquid production lines of Naphthalene Superplasticizer, Amino Aryl Sulphonate Superplasticizer, Polycarboxylate Superplasticizer, Sodium Melamine Formaldehyde Superplasticizer and Aliphatic Superplasticizer etc., MUHU has a production capacity of 200,000 tons per year for a variety of admixtures. MUHU also possesses drying equipment with drying capacity of 50,000 tons annually and automatic dry mortar production line with annual production capacity of 300,000 tons.

2. I plan to build a Naphthalene Superplasticizer production line, but I’m not a technical expert. Is it possible that MUHU makes a general scheme for me to get a basic understanding?
Certainly. MUHU provides turn-key project services. From general project proposals to customized project designs and from project blueprint to final commissioning.  MUHU will take care of every detail and save customers the need to worry.

Here’s the technical reference for Naphthalene Superplasticizer project.
Basic equipment for manufacturing (liquid) (60 tons per day)
A .Reactor of 5000 liter 1 set Naphthalene Liquidification;
Reactor of 5000 liter 1 set Sulfonation;
Reactor of 10000 liter 2 sets Condensation;
Reactor of 20000 liter 1 set Neutralization.
B. Raw material storage tanks, 3 sets, 30 tons capacity for each set
C. Pipeline: Phenolic resin pipeline and steel pipeline
D. Heating system: streaming boiler 0.5 t, oil-fuel 300000kcal./h
E. Environmental protection equipments: Corrosion-resistant draught fan, spray pump, Naphthalene recollection room, etc..
F. Additional equipment: including power terminal, electrical cabinet, pipeline pump, air compressor, operation platform, etc..
G. Automatic production monitored by a computer system and data collection devices

Raw material for production
1. Crude Naphthalene (98%)
2. Sulphuric Acid (concentration 98%)
3. Formaldehyde (concentration 36%)
4. NaOH(40-60%)
Project Investment
Equipment: 163,000USD to 200,000USD
Plant, warehouse and office occupancy: 500-1000m2
Clear height of plant workshop: 6-8m

3. Why is dry mortar production line remarked as “a versatile production line”?
It can be widely applied in production of masonry mortar, plastering mortar, heat preserving mortar, high strength no shrinkage grout mortar, self-leveling mortar, ceramic adhesive mortar, repairing mortar. Further more, it can be used in the mixing of concrete admixture powders.

4. How can I get MUHU technology in an economical way?
To reduce know-how transfer cost, customers can apply for membership of MUHU Production Alliance to enjoy privileged and cost-efficient technical service.

5. Where should I purchase equipment from?
MUHU provides information of equipment suppliers. When necessary, MUHU shall dispatch specialist to accompany customers and make purchase.

6. How long does it take to establish a naphthalene production line?
About half a year.

Heatless PC Production

1. What are the new and most remarkable features of production system MH-PCL-2A?
All-in-one design, no heat production and automatic precise control.
This heatless production system can produce PC superplasticizer and RMC-use admixture as well. It integrates synthesis with compounding in the same line.

2. What are the major raw materials and corresponding composition of MH-PCL-2A?
A GPEG: 36％;
B Acrylic Acid（MA: 3.5％;
C Hydrogen Peroxide（H2O2）: 0.3％;
D Catalyst（CHJ－2): 0.7％;
E Water：60％

3. What’s the price of raw materials?
Current price of raw materials in China market on FOB (XINGANG) basis
A GPEG : 2200USD/MT
B Acrylic Acid（MA）: 2180USD/MT
C Hydrogen Peroxide（H2O2）: 220USD/MT
D Catalyst（CHJ－2）: 2056USD/MT

4. What’s the estimated production cost of finished product from MH-PCL-2A?
0.3-0.35 USD/Liter.

5. What’s the requirement on production conditions?
A 4.5-meter high building with an area of 200㎡.

6. How can I calculate utility costs?
30kw of electric power is required for each batch of production.

7. Can I have regional exclusive right during collaboration with MUHU on this project?
Yes. A regional exclusiveness contract can be signed between MUHU and partner once the region is determined. Then MUHU won’t cooperate with a second customer from this region.

8. What are the cooperation patterns on this project?
Cooperation patterns shall be decided upon basis of mutual benefit and thorough discussion. As a reference, successful practices among MUHU existing cooperation partners are as follows:
a) MUHU provides related technical services for free on condition that equipment should be purchased from MUHU. Meanwhile, in order to hold control on raw material quality and make full use of raw material competitive price in China market, MUHU provides group purchase service for cooperation partners.
b) MUHU provides related technical services for free on condition that for each MT of primary liquid produced from MH-PCL-2A, MUHU charges a royalty of 10 USD. Royalties are cleared once every time the production reaches 1000 tons. Alternatively, royalties can be cleared once a year from the date when contract is signed. Whichever day comes first will be payment day. In this case, cooperation partner doesn’t need purchase raw materials from MUHU. But MUHU can still provide support in quality inspection.

9. Who shall be responsible for investment on this production system? How much is it?
The investment on this production system is estimated at around 50,000 USD which should be the responsibility of cooperation partner.

10. What equipments does this production system require?

11. How long does establishment of this production line take?
It can be put into production within one month.

12. Why is this project called “technical cooperation”?
Firstly, customers take responsibility of investment, market promotion and sales.
Secondly, MUHU provides excellent quality raw materials at competitive prices while customer purchases raw materials from MUHU.
Last but not least, MUHU provides free technical services and support nearly 24 hours a day 7 days a week.