Introduce product to a group of professionals is a big challenge for me when I start out in this industry. The customer has the different environmental testing requirements for the product. Such as high temperature and humidity (For example: Form 500hr to 1000hr even to 2000hr). The shear strength is required to be stricter than ever. This products hardener is IMIDAZOLE, if the heating process has contact with eyes and skin will get hurts. This is very important to improve the ventilation equipment and the products to reduce damage. Reduce the allergy problems within using. This process also can help the product development.