Beijing Chong Chin five plus special doors Manufacturing Co., Ltd. has established a perfect quality assurance system and service system. Established from production to sales to service a set of processes, workflow, ensure quality and efficiency. The Company since its inception, and strive to Zhenzhi beauty products, has introduced the industry's most advanced numerical simulation of the transfer system and the ERP system, to build the first domestic peer information management platform, enterprise full computerization, paperless management. Since the products on the market, with its exquisite, luxury honorable, durable, easy installation, renowned north and south, the majority of consumers, has been leading the industry trend of the door. We always adhere to forge ahead, realistic and innovative business ideas, technology-based, market-oriented, based on the general public, look to the future, in practice, continue to accumulate experience, to promote further expansion of the business, constantly renewal and continuing further. Five plus company striving China does not seek the honor of the king door security door, just the quality first, the use of materials, fashionable, cheap, independent research and constantly develop new products to return the majority of consumers. Five plus product sales outlets throughout the country, plus a show of [five] to become a household name, five kinds of door Stuttgart, Chinese brand, China Famous, trust the quality of products, the Construction Products. Five plus a show with the facts speak for the company, seeing is believing, five plus a show We sincerely welcome new and old customers around the country to visit and discuss cooperation. Five plus a show of hands in creating a brilliant future special doors. Product description: soundproof door soundproof door type mainly from the noise, commonly used in audio-visual room, studio and meeting rooms are soundproofed room requirements. Soundproof doors require doors made of sound-absorbing material, the crack of a material having an elastic sealing strips seal. Soundproof doors are the following three types: (1) fill core soundproof door: with sound-absorbing cotton filled in core doors, doors with a sponge rubber strip at the seam seal (2) Outsourcing soundproof doors: outside the ordinary wooden doors coated with leather , sound-absorbing cotton stuffing inside leather and artificial leather layering long pass soaked nailed, sponge rubber band around the gap cement seal. (3) soundproof fire doors: doors wood frame in filling them with sound-absorbing material, the outer panels with sound insulation, sound insulation and fire-resistant fiberboard metal inlay bag, surrounded by cement seal gap sealing strip. (4) 2015, five door industry plus the latest development: the blast walls, blast-resistant walls, the doors, windows venting, venting doors, soundproof doors, radiation doors, etc., look more beautiful, more superior quality, products more user-friendly, the company free measurements.