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Customer Reviews
Our company have been cooperating with Hongzheng for 5 years, their service is good and the staffs are stable. Mr.Lam has served me for 5 years, we are like friends. We mainly purchasing calcium chloride dihydrate, it has very good performance on rubber glove industry. Worth working with them.

—— Tomo Visava

Hereby, we confirm that the quality of anhydrous ferric chloride barreled one is good. Thank you for all your suggestion, also good after sales service.

—— Syed Avais Ali

Under here with, we'd like to certified that anhydrous sodium sulfate of 500 tons supplied in 2020, works so well in textile and dyeing industry.

—— Torikul Zaman

Very appreciate for your professional service & very happy to know you. We trust the quality of your products. It always the best. Keep this going, and we will establish a long-term trade relationship with you.

—— Bill

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Company News
Latest company news about National Day holiday

National Day holiday

[2022-09-28 11:02:19]
Dear Customers, We will have 7days holiday from 1st Oct, to 7th Oct for National Day holiday. We are still online during the holiday, if you have any inquiry or question, please kinldy contact e-mail "jessic@hongzhengmy.com" or whatsapp"+8613928889251". Best Regards, HONGZHENG Read More
Latest company news about Application Of Ferric Chloride Anhydrous

Application Of Ferric Chloride Anhydrous

[2022-08-19 11:23:55]
Ferric chloride anhydrous is a covalent compound. Also known as ferric chloride, the chemical formula is FeCl3, and it is a black powder. The melting point is 307.6℃, and the boiling point is 316℃. It is easily soluble in water and has strong water absorption. It can absorb moisture in the air and ... Read More
Latest company news about What is the difference between ferric chloride hexahydrate and ferric chloride anhydrous?

What is the difference between ferric chloride hexahydrate and ferric chloride anhydrous?

[2022-06-21 10:36:05]
Ferric chloride hexahydrate is a crystalline water compound, and ferric chloride anhydrous is a brown powder. ​​ Ferric Chloride Hexahydrate Molecular formula: FeCl3.6H2O Properties: Ferric chloride hexahydrate is yellow-brown crystalline or massive solid, odorless and astringent. The melting point ... Read More
Latest company news about Production Methods Of Ammonium Sulfate

Production Methods Of Ammonium Sulfate

[2022-05-24 17:04:04]
The production methods of ammonium sulfate mainly include: 1. Neutralization method: ammonia and sulfuric acid react in a saturated crystallizer (under vacuum or normal pressure) to generate ammonium sulfate crystals, which are separated by a centrifuge, the filter cake is dried to obtain the ... Read More
Latest company news about Hexamine Production Process

Hexamine Production Process

[2022-04-28 17:00:41]
Liquid Phase Process 1. Liquid Phase Process Description The liquid phase process uses a 37% formaldehyde solution and ammonium. The hexamine solution is then dewatered by evaporator and enters the centrifugation and drying device in order to obtain hexamine. This is an advanced, easy process. ... Read More
Latest company news about Premium Grade & Qualified Grade Calcium Chloride Ahnydrous

Premium Grade & Qualified Grade Calcium Chloride Ahnydrous

[2022-04-08 15:38:11]
Anhydrous calcium chloride has an unpleasant smell because it contains high impurities, especially calcium chloride made of calcium carbonate and hydrochloric acid, because the by-product acid will have organic impurities or the final adjustment of pH is not enough, there may be hydrochloric acid. ... Read More
Latest company news about Calcium Chloride Anhydrous Powder Comparison Test

Calcium Chloride Anhydrous Powder Comparison Test

[2022-03-24 10:56:25]
Calcium Chloride Powder Left Side: Our product, it with clearer solution when dissolved in water. Right Side: Other product, its aqueous solution is cloudy and contains impurities. Read More
Latest company news about Chlorination Method and Titanium Tetrachloride By-product Method For Ferric Chloride Anhydrous

Chlorination Method and Titanium Tetrachloride By-product Method For Ferric Chloride Anhydrous

[2022-02-21 12:04:48]
The industrial methods for preparing solid anhydrous ferric chloride include Chlorination Method and Titanium Tetrachloride By-product Method. 1. Chlorination Method: Uses waste iron wire or iron flakes as raw materials, and reacts with chlorine gas flowing upstream in the reaction furnace to obtain ... Read More
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