Umbrex is pleased to welcome Yi-Hsin Chang with Chang Unlimited.  The secret to Yi-Hsin Chang’s success, no matter the industry, company or situation, is her creativity, tenacity and hard work. She is single-mindedly driven by a need to succeed and to make a positive impact on everything she does. Yi-Hsin has developed and implemented growth strategies, and led transformational change in companies small and large. She is particularly adept at assessing and adapting to new situations, and managing challenging personalities….