... glass rod 2 tight tolearance 3,Resistance 1100 degree 4, no bubble no airline 5. non-discolouring photovoltaic Good quality ... , semiconductor,optical, photovoltaic,chemical industries· GOOD QUALITY· COMPETITIVE PRICES· ON-TIME DELIVERIES· GOOD ... ranging from 3-300mm clear quartz tube(high purity,good heating resistance,low OH), ... , and bending, and so on. Your design and drawing are accepted, we can make ...