3 the hidden frame window should also provide the structure and weather resistance of the compatibility of the experimental statement, glue and maintain the environment temperature, humidity records.

Preparation of some new sealants for cavity-glass is described, and their gas permeability coefficients, adhesion, weather resistance are discussed and compared.

On the basis of this resin as a matrix, a weatherproof flame retardant gel coat resin was developed and datum of weatherproof ability was given.