Custom design and development of products in the field of energy, namely, fans; Custom design and engineering of products in the field of energy, namely, fans; Design and development of products in the field of energy, namely, fans; Design and testing for new product development; Design and testing of new products for others; Design and testing of new products, namely, fans, for others; Design for others in the field of energy products, namely, fans; Design of engineering products; Design of ...