Ningbo Yi Helv the color plate industry limited company, the home biggest calcium silicate board manufacturer, mainly exports American European the Japanese South Korea, the product obtains the American quality system authentication, and passed the Singapore TUVSUDPSB laboratory to bear dyes the experiment, the product environmental protection, artistic, widely utilized in the room inner wall group, the suspended ceiling, the fire door and the outer wall repair. This company simultaneously produces cement fiberboard the press board ceiling, the price superiorly inexpensive, the international quality.