A Thai-Chinese company, Xin Ke Yuan Steel, has denied allegations regarding the safety of its steel rods after a high-rise building collapsed in Bangkok following a 7.7 magnitude earthquake. The incident raised concerns about construction safety and led to the arrest of a Chinese executive. Authorities are investigating the quality of construction materials and potential illegal activities related to the bidding process. The company's operating license is suspended due to a previous fatal incident, and they face accusations of issuing false tax invoices.