About Us

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About Us

Our History


1994: the foundation of Xinmi Wanli Industry Development Co., Ltd. (Wanli Group’s former name). Originally Wanli Group manufactured alumina refractory materials.

2002, Wanli Group had grasped the market opportunity in energy industry and timely adjusted the product structure, started to focus on the research, production, sales & service of ceramic proppant.

2011, by the lean production management, Wanli Group production capacity had reached 210,000 tons with the developement of domestic and international market. Wanli Group also payed more funds on research and new tech importing, so as to improve continuously the quanlity of product and services.

2012, Wanli Group established the subsidiary company – Zhengzhou Top Trading Co., Ltd. (Top Chemical), major in magnesium hydroxide chemicals. Two automatic production lines had been set up.

2013, the first branch company was set in America.

2016, the second branch company was set in Argentina.

2017, the third branch company was set in UAE.

Until 2018, Top Chemical established the local logistic and warehouse in America, Argentina, UAE, KSA, Oman, Egypt, and provided service of logistics solution & local warehouse.


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Top Chemical has been devoted to introducing, absorbing, applying, and re-innovating the technology for magnesium hydroxide more than 5 years. Top Chemical has researched and developed the latest multifunctional magnesium hydroxide with different uses such as cables, plastic, rubber, polymers and ACP, etc.

Top Chemical’s marketing network extends to all over the world, such as Japan, Turkey, Korea, Iraq, Oman, UAE, Thailand and the United States, etc. Magnesium hydroxide has been used in many different ways.


Main Product


1. High Purity Magnesium Hydroxide


101. High Purity Magnesium Hydroxide for Heat Shrinkable Tube

Magnesium hydroxide is an important halogen-free flame retardant. It has the advantages of no dripping, no carbonization, non volatilization, no exudation, and no secondary pollution to the environment.


102. Magnesium hydroxide flame retardant for engineer plastic

The magnesium hydroxide flame retardant can be added to a small amount of PA or PVC thermal conductive material to reach V0 grade, and when the finished product is ignited, the smoke is small, odorless and anti dropping.


103. Magnesium hydroxide flame retardant for Cable

Low somke halogen free no toxic flame retardant magnesium hydroxide for cable,UL-94 V0 and smoke suppressant.Preferred products for flame retardant cables.And it is cheaper than other halogen-free flame retardants.


104. Magnesium hydroxide flame retardant for EPDM

More environmentally friendly and cost saving than other flame retardants.MDH not only can achieve a good flame retardant effect, but also can not affect the physical properties of the material.


2. Brucite Magnesium Hydroxide


201. Fuel Gas Desulfurization Brucite Magnesium Hydroxide

Desulphurization efficiency of magnesium hydroxide is 95~98%;20% cost savings for the whole investment;Lower equipment corrosion; By product can be sold.consumption of magnesium hydroxide is around 40% of CaCO3 for removing same quantity SO2.


202. Wastewater Treatment Brucite Magnesium Hydroxide

With simple process, low cost, and easy to implement, Magnesium hydroxide is an economical choice. And also it is uneasy for deposition; good liquidity, convenient transportation by pump and easy storage.


203. Smoke Suppressant Brucite Magnesium Hydroxide

Significantly accelerate the rate of weight loss and improve the material's oxygen index and char yield.Environmental friendly; High efficiency;


3. Magnesium Hydroxide Uses


301. Magnesium Hydroxide Uses for Aluminum Composite Panel

Activation degree is high, reduce costs and smoke, the compatibility and dispersibility can be improved, The particle size distribution is uniform.


302. Magnesium Hydroxide Uses for Construction

High fire extinguishing performance, high activity and strong ability to trap free radicals, The decomposition of magnesium hydroxide create water, it’s not only the coolant, also reduce the smoke density.


303. Magnesium Hydroxide Uses for Fiber Reinforced Plastics

Lower the cost, enhance flame retardancy and smoke suppression. MDH is better for plastics needing high temperatures.


304. Magnesium Hydroxide Uses for Bonding Agent

Uniform particle size, High stability, large adding amount, and can significantly reduce the cost.


305. Magnesium Hydroxide Uses for Oil Additives

Magnesium hydroxide is a very important processing section in antisepsis and desulphurization. High Performance and cost-saving.


4. MgOH2 Flame Retardant Compounds


401. MgOH2 Aluminum Hydroxide Compound Flame Retardant

Magnesium hydroxide and aluminum hydroxide compound flame retardant, with the synergistic flame retardant effect, can improve 10%-30% flame retardant effect, and reduce the smoke density obviously. Compare with the individual flame retardant, it's more efficient, more...


402. MgOH2 Bromine Compound Flame Retardant

Incredible decrease the smoke density, perfect flame retardant effect, lower the cost, eco-friendly flame retardant chemical, Sufer fine powder, widely flame retardant use.


403. MgOH2 Phosphorus Compound Flame Retardant

High flame retardant efficient, smoke suppressant, decrease dripping, Cost-Saving, 10-30% fire retardant effect compare with individual FR, best choice for low smoke product.


5. Flame Retardant Masterbatch


501. PVC Flame Retardant Masterbatch

PVC cable material special for network cable is processed through particular mixing refining device. It is a PVC cable material with high flame-retardant performance, which has excellent heat resistant and oxidation-resistant properties.


502. PE Flame Retardant Masterbatch

Cost-efficient. The price is 30% lower than the core materials of fireproof aluminum composite panels in the market, which increases the core competence. Product Upgrading. The ordinary panels can be upgraded to Grade-B fireproof panels, which meet the national...


503. PP Flame Retardant Masterbatch

The magnesium hydroxide with stearic acid-modified effectively decrease surface energy while markedly reducing PP mechanical property loss and improving thermal stability of the PP compounds.


504. EVA Flame Retardant Masterbatch

Compared with traditional magnesium hydroxide flame retardant products, it is much easier to disperse and mix, and also have a better plasticization performance, product properties and high yield.With large filling quantity, it can greatly reduce the costs.


Equipment


Reactors, Storage Cabin, Raymond Mill, Jet Mill, Dust Collector Equipment, High Speed Modification Equipment, Automatic Package Machine and Wrapping Machine, etc.


Brucite powder manufacturing process:


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High Purity magnesium hydroxide (Chemical Synthesis) manufacturing process:

MgCl+ 2NH3·H2O → Mg(OH)+ 2NH4Cl

MgCl+ Ca(OH)→ Mg(OH)+ CaCl2


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Product Application


PVC Flame Retardant Masterbatch

PVC cable material special for network cable is processed through particular mixing refining device. It is a PVC cable material with high flame-retardant performance, which has excellent heat resistant and oxidation-resistant properties.


PE Flame Retardant Masterbatch

Cost-efficient. The price is 30% lower than the core materials of fireproof aluminum composite panels in the market, which increases the core competence. Product Upgrading. The ordinary panels can be upgraded to Grade-B fireproof panels, which meet the national...


PP Flame Retardant Masterbatch

The magnesium hydroxide with stearic acid-modified effectively decrease surface energy while markedly reducing PP mechanical property loss and improving thermal stability of the PP compounds.


EVA Flame Retardant Masterbatch

Compared with traditional magnesium hydroxide flame retardant products, it is much easier to disperse and mix, and also have a better plasticization performance, product properties and high yield.With large filling quantity, it can greatly reduce the costs.


Certification


ISO,SGS

We implement strict QA & QC system internally. We will test the raw materials that enter into our factory, and unqualified material will not be used. The finished products will be also tested before leaving our factory.We have a Loading Supervision Report for our customers every shipment. Before that, we will conduct strict product quality testing.

We use several sets of dust filter for each production line. We add them into the production line to protect the environment and protect the health condition of the workers before the government ask us to do so.Regarding the security at work, Top Chemical always devotes to employees’ health and safety, and has established a comprehensive QHSE management system according to the ISO and OHSAS, which improves our management and operation. For example, we supply safety helmet, earplug, gas mask goggles to protect the workers’ health.


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Our Service


24*7 service, Best Choice, Stable Quality, Plenty Storage

1. Top Chemical cooperates with the world-famous logistics company and has established a sound logistics system, which covers container, bulk-cargo, sea and road transportation. Besides, we have set up branch companies and storage centers in North America, South America and Mid East. Professional sales staff and efficient logistics team provide 24/7 service and ensure that the company's products are sent to the customer’s location.

2. Top Chemical will customize a complete solution for our customers. Our current annual capacity is around 40,000 tons. So we can keep stable supply capacity.

3. Top Chemical has a strict quality control from material to the process of producing and control of the finished product. We also cooperate with SGS, TUV and other international well-known third-party to guarantee that the production and delivery meet customer requirements.

4. Top Chemical has multiple logistics warehouses around the world. Such as North America, South America, Southeast Asia and Mid East.


FAQ


01.

Q: Are you factory or trading company?

A: We are a manufacturer with over 10 years’ experience. We do hope to help you save cost by our professional knowledge and warm service. And you are welcomed to visit our factory at any time.


02.

Q: What should I do if I want to use Magnesium Hydroxide to my product without any experience?

A: Magnesium Hydroxide is some kind of new material to world market, and gradually increases in the market share. Our sales will contact with you about the final product, based on performance, material, usage and standard, etc. Then we will advise you the most suitable solutions, also free samples are provided for testing.


03.

Q: What should I do if I want to replace the current flame retardant?

A: Very appreciate for your trust. You can communicate the flame retardant spec. with our sales, and then we will offer you a cost-saving solution.


04.

Q: How to get the free samples for test?

A: Please confirm your expected performance for the final product, and leave us your contact information. Our sales will contact with you and help you choose the best product.


05.

Q: How many kgs of sample will be enough for the test?

A: Frankly speaking, 0.5-2 kg is enough. If you want more samples to start the pre-production, please check the details with our sales.


06.

Q: How many days will the sample take?

A: Normally, 3-7 days. It depends on the application and special requirements.


07.

Q: How do you control the product quality?

A: Thanks and it’s really important for a manufacturer. We have the professional QA & QC department, and we will supervise the quality from the raw materials, semi-product, and final product. There are sound manage systems in our company to secure our product quality.


08.

Q: What is your main market?

A: Southeastern Asia such as Japan, Korea and Thailand, etc.

Europe such as German, UK and France, etc.

North America such as America, Canada and Mexico, etc.

Middle East such as KSA, Oman and UAE, etc.


09.

Q: What’s the annual capacity of your plant?

A: For Brucite product, around 60,000 MT per year in 2017.

For High purity product, around 35,000 MT per year in 2017.

We also provide masterbatch, compound flame retardant and etc. as customer requested.


10.

Q: What’s your advantage?

A. 1.Considering from company, we are a group company with plenty capital and sound management system. Meanwhile, we have subsidiary company in UAE and America. If we have long-term cooperation, we also can provide local logistic and warehouse service.

2. While from the product, we have advanced tech and equipment. Our product have narrow particle distribution and special design plant, which save manpower and cost.

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