The registered address of american sound technology (guangzhou) ltd. Is located at no. 1394, no. 204, located in the city of guangzhou, located in the city of guangzhou, on leung street, and is the market supervision authority of the city of guangzhou, represented by a legal person, wang jin yun, who operates on behalf of the agency for scientific and technical projects; electronic equipment recycling technology advisory services; robotic systems technical services; construction engineering, civil engineering technology services; environmental extension services; information and electronics services; mechanical technology extension services; and energy conservation technology extension services; new material extension services; communications and signal technology extension services; internet goods promotion services; internet goods sales (except for licensed goods); retail internet goods (except for licensed goods); installation services for stage lights, audio equipment (except for licensed goods); distribution of hardware products; sale of hardware and spare parts related to curtain walls; retail sales of hardware; development of wall-related hardware and spare parts; import and export of goods (except for proprietary goods); import and export of technology; electronic automation engineering services; electronic equipment installation services; electronic equipment installation services; electronic device wholesale; distribution of electronic products; retail electronic electronic devices; retail distribution of electronic products; electronic commerce information advice; research, development of electronic, communications and automated control technology; development of electronic security systems, technical services; electronic product testing; electronic engineering services; electronic product design services; repair of electronic products; repair of household electronic goods; retailing (except for food retailing); specialized repair of radio and television equipment; installation of radio and television transmission facilities; installation of radio and television equipment; installation of broadcasting system engineering services; distribution of communications and radio and television equipment and their accessories; distribution of radio satellite equipment; distribution of radio and television equipment; rental of audio and video equipment; distribution services;