The current technical standards (JG) for thermal insulation gridding cloth of external walls: alkali resistant fiberglass mesh warp weft tensile breaking strength: 750 n / 50 mm, alkali tensile breaking strength retention rate: 50%, weight/㎡: ≥130 grams JG alkali resistant fiberglass mesh warp weft tensile breaking strength: 1250 n / 50 mm, alkali tensile breaking strength retention rate: 90%, weight/㎡: 160 grams, or breaking strength and alkali resistance strength retention: as all know, the breaking strength and alkali resistance strength retention, important performance: breaking strength, glass fiber gridding cloth and glass fiber count or weight Currently the glass fiber gridding cloth for thermal insulation of external walls is about 130 grams/㎡ with relatively lower quality and 160 grams/㎡ with standard quality. With platinum glass fiber as base material, gridding cloth is coated with emulsion with good alkali resistance and high tensile resistance in the bidirection of warp and weft, thus featured by smoothness and reducing the mortar amount.