At Tech-Vina, quality control is the most important step in the entire production process. We apply the 5-step quality control process: 
- QC of materials at supplier's production facility
- QC of input materials at Tech-Vina factories
- QC of semi-finished products during production
- QC of finished products 
- QC of products before delivered to customers.
All samples during quality control are kept for at least 2 years.
 

Vietnam is a biodiverse country and ranks 3rd in the world in terms of cassia products, the cassia growing area has increased over the years based on changes in scientific farming methods and protecting forests, soil, and environment.
In the supply chain of natural essential oils and aroma chemicals in Vietnam, especially cassia products, Tech-Vina is an important link between farmers, raw factories, and customers. That sustainable relationship is based on the win-win principle and is a solid foundation for Tech-Vina's strong supply capacity.

Tech-Vina has the HACCP and Kosher certifications for both its warehouse and its distillation plant, covering the design, production, packing, storing, and trading of aroma chemicals and essential oils.

Tech-Vina understands our customers. We have a flexible payment policy for each of them. In all situations from consulting, purchasing, shipping, and after-sales, Tech-Vina always stands by customers to handle any problems and difficult situations.

24/7 customer care service via phone number +84 866 115 386