Dasteck ChemicalsYantai Dasteck Chemicals Co., Ltd.
Producing TDO since 1983
40+ Years of Thiourea Dioxide Manufacturing Experience
10,000 MT/Year Production Capacity
Serving Textile, Pulp & Paper and Specialty Chemical Industries
Exporting to Global Markets
ISO9001 Certified
Participating Drafting Unit of the Chinese Industry Standard for Thiourea Dioxide (HG/T 3258-2010)
Thiourea dioxide (TDO) has a low entry threshold, but it is not easy to do it professionally: the product itself tends to decompose, and where quality control falls short, accidents follow. Dasteck has built its position on the strictest process control and highly sophisticated equipment — and it is on that foundation that we have grown into one of the most advanced producers in the industry.
We supply straight from our own plant. With no middlemen in the chain, we are able to offer competitive FOB and CIF pricing directly to our customers.
We purchase superior raw materials to secure the lowest possible impurity content and the highest purity. Where other producers economise on feedstock, we do not.
Our entire production line runs on fully automatic control equipment, among the most advanced in the industry, ensuring accuracy, consistency and stability at every stage of process control.
Every index is verified against a complete set of sophisticated and strict testing methods before the product leaves our plant. Most producers test purity alone and assess moisture by experience and visual inspection; we test the full specification.
Each batch must pass a dedicated safety performance test before dispatch. Any batch that fails to meet the standard is not permitted to leave the factory. The testing method itself is proprietary to Dasteck.
Our automatic drying equipment ranks among the most advanced in the industry, delivering among the shortest drying times achievable together with precise moisture control. Conventional manual drying depends on operator judgement for both time and temperature; our process removes that variability.
Finished goods are held in a constant-temperature environment to preserve product stability.
Every lot is tracked from raw material through to shipment, and a retention sample is kept for each batch for convenient tracking and traceability.
COA, SDS, packing list and certificates accompany every batch.
Automated process control and strict EHS management have delivered decades of operation without a single accident.