... lead time can be fairly controlled.3. Have wide product lines: LED lens, lamp shades, lamp covers, various glassware, fresnel ... glass, low-iron glass, tempered glass, crystal glass, and so on.5. With different process methods: moulding press, mouth blown, cutting, etc ... or color is available: surface finish: sandblast, acid, coating, lines or patterns outside or inside, etc. color: colored material or ...