Guangzhou ShuPaSi Electronic Tech Co., Ltd. (SURPASS), a professional manufacturer with more than ten years experience in researching, developing and selling commercial and professional Audio and Video devices, security equipment, enterprise level weak electronics industry.SURPASS is also an expert solution provider for Public Address (PA) project, Digital and HD Video Conference Discussion System, Villa & Home Audio System project, School and Campus project, IP Network Public Address System, Voice Alarm Evacuation System, Bank or Prison used IP Intercom System, and is famous for its high quality products and services. We commit 5 years quality warranty to our customer. Most of products are compliant with CE, RoHS, CB, EN54-16, C-tick, FCC or UL, and EN54-24 fireproof certificate.We response to inquiry within 4 hours, design sound system within 24 hours, solve quality compliant within 48 hours with spare parts of new replacement.Now we working with more than 20 worldwide distributors, we support high qualified products, professional pre-sale and after-sale service, we provide various advertisement gifts and material to support customer marketing, we provide full range of company presentation, product technical documents and versatile system design templates to ensure end-customer easy