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 fo...