Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.Product iteration is an inevitable link for brands, and the product iteration of lighting industry is known to be fast. Every year, major brands will constantly refresh consumers' cognition with diversified and rich products.