Urea n46, dap, basalt fiber products, nitrocellulose, centralite ii automotive urea, infrared optical lenses and lenses, polycrystalline germanium, metallic gallium, sulfur.Import and export of goods and technology
Optical lenses.
Telecentric lens, bi telecentric lens, telecentric lense..Development and manufacture
Optical lenses.
Semi Finish Optical Lenses .