This exhibition stand contractor has no proper business ethics. Their senior management are very money minded and they got no service at all. Previously, a contractor outsource the project to op3 for their client in europe. When the exhibition ended, OP3 undertake the sub con that refer them the business and went directly to the client and told the client not to use the sub con. This business is led by Charles Chang, managing director of OP3 Global. For client side, they are undercuting the price of the exhibition booth. They quoted the client so low to make the client tempted to sign with them. But when the project confirmed, the output of delivery was totally different. DO NOT USE THEIR COMPANY SERVICES.