Rock take the lead to adopt the US Thermtool high frequency welding technology , now we have about 25 advanced spacer production lines, more lines will be introduced in future, Rock serves a high-end Aluminum spacer for the insulating glass.

Rock now make it headquarter in Beijing. our products are very popular with worldwide market.

About aluminum spacer bar. Size from 4mm to 40mm.

-5.5 7 7.5 and 8.5mm side welding line spacer bar have been put on the market 100% guarantee bendable.

-Our spacer bar surface very shine, and welding line smooth.

About sealant;

Our silicone will not become crisp and crack subzero 30 degree, and will not become soft, degradation at 90 degree.

About Butyl

Water vapor and gas permeability lower to 0.2g/(㎡.d). Quality is similar as Germany Kommerling, pass SGS certificate