The Technical Crystal (China) Ltd motto is: the customer is #1. Were here to assist you with any aspect of customer service. If any questions arise as you surf through our site, you may call us at (852) 2688 2033. A lit......The Technical Crystal (China) Ltd motto is: the customer is #1. Were here to assist you with any aspect of customer service. If any questions arise as you surf through our site, you may call us at (852) 2688 2033. A little about our company, we have been in the for over and now have employees to help you with all of your needs. We are currently based in the area and we really do appreciate your business! My name is Technical Crystal (China) Ltd rep that will take care of you, so if you have any questions you can email me or call me at (852) 2688 2033.