Through the rules about the raw material designation, contrasting the products with a standard product sample, and experiments we check the qualities and ensure the safety of the products.

Before producing the finished products, we check the safety and appropriateness through the experiments to make it sure that the products observe the standards.

We examine the finished products before the delivery to make sure that the finest products can be delivered.

We set test standards and standard products to select excellent materials to be used during the production.