| Grade |
Photograph |
Tech |
| Na2S2O3·5H2O |
99% Min. |
99% Min. |
| Insoluble matter in water |
0.01% Max. |
0.03% Max. |
| Na2S |
0.001% Max. |
0.003% Max. |
| Fe |
0.001% Max. |
0.003% Max. |
| pH value (200g/L solution) |
6.5-9.5 |
6.5-9.5 |
| Grade |
Specs |
| Na2S2O3 |
97% Min. |
| Insoluble matter in water |
0.03% Max. |
| Na2S |
0.001% Max. |
| Fe |
0.005% Max. |
| pH value (200g/L solution) |
6.5-9.5 |
Broad World, Global Reputation
Mudanjiang Fengda Chemicals Corporation was founded in 1995,it is a specialized manufacturing and operating chemical enterprise which authorized and approved by MOFCOM, we have passed ISO9001:2015 Quality Management System Certification, have got FULL REACH registration, FAMI-QS certification for partial products exported to EU. Have Got KKDIK registration for some products exported to Turkey, also have got K Reach registration for some products exported to South Korea. We have our own warehouses in the main ports of China, such as Tianjin Port, Shanghai Port and Qingdao Port.
Our company own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas. Oxalic acid, formic acid, sodium formate, calcium formate, sodium sulphide, series of humic acid, sodium hydrosulphide, ammonium chloride, sodium thiosulfate, and calcium nitrite are partial strong products. Among them, Oxalic acid occupy largest export volume and export to more than 100 countries and regions in the Europe, America, Asia, Africa and other continents, winning customers praise with its superior quality , favorable price and excellent service. For over 30 years, stick to business philosophy of" integrity, diligence, fighting, innovation ", Fengda chemicals has built long term & stable trade relationship with more than 100 countries and regions in the world.
We are located in significant city- Mudanjiang, Heilongjiang province. This city has reputation of "small Jiangnan in north of China". Here are world famous Alpine barrier lake named Jingpo Lake, mist-covered Xingkai Lake and Siberian Tiger Nature Reserve Park with highly distinctive, etc. Due to the beautiful scenery and pleasant climate, Mudanjiang is the tourist resort aspired by domestic and foreign guests.
Hereby Chairman of the board-Mr. Wang Jiansheng with all his staff, sincerely hope to cooperate with more friends in the world and seek common developments.
Audited Supplier 
){kind=link}