Square Sunglasses Metal Frame factory Our History Our company --- Solar Zone Optical Inc. has been established for more than 15 years since 2005. Our company now has about 50 employees. Our annual production is 200,000 pairs of metal sunglasses, plastic sunglasses (PC, TR90 and ACETATE) 400,000pcs and reading glasses 400,000pcs. In the factory鈥檚 capacity is 40% self-produced, 60% cooperate with...