Cable tray elbow to know the angle and the width and height of the bridge how to calculate the problem of cutting more
There are ready to buy ah! What about doing? Waste of manpower, material, time.
ZR is flame retardant, the general representative of the C-class flame retardant ZB is B-class flame retardant
ZR is the meaning of flame retardant, flame retardant A, B, C three, ZB on behalf of B-class flame retardant, ZR default C-class flame retardant. Flame retardant properties ZA & gt; ZB & gt; ZC
ZR is the meaning of flame retardant, flame retardant A, B, C three, ZB on behalf of B-class flame retardant, ZR default C-class flame retardant. Flame retardant properties ZA & gt; ZB & gt; ZC. Flame retardants are currently organic and inorganic, halogen and non-halogen. Organic is based on bromine, nitrogen and red phosphorus and compounds as the representative of some of the flame retardant, inorganic mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant system. In general, organic flame retardant has a good affinity in the plastic, brominated flame retardants in the organic flame retardant system occupies an absolute advantage, although the environmental issues on the "criticism" but has been difficult to have other flame retardant system to replace.
