美国的 Maniville 公司是一家专门生产防水、保温和接缝材料及过滤材料的公司,也是美国防水市场三大重要的供应者之一。该公司近90%的膨胀珍珠岩板是由设在法国维桑堡的一家子公司生产的,其产量占法国全国的五分之一。1986年法国子公司在膨胀珍珠岩屋面保温材料不景气的情况 Maniville, Inc. of the United States is a company specializing in the production of waterproofing, insulation and jointing materials and filter materials. It is also one of the three most important suppliers in the US waterproof market. Nearly 90% of the company’s expanded perlite plates are produced by a subsidiary in Wissembourg, France, which accounts for one-fifth of France’s production. In 1986, the French subsidiary suffered from a sluggish thermal insulation material in the roof of expanded perlite