Hang Lung Jewelry, Baitai Jewelry. Relevant information shows that the main business of Henglong Jewelry (Gold Recycling) includes general business items: design, sales and recycling of diamonds, jade, colorful treasures, gold products, platinum products, K-gold products, palladium products, silver ornaments, agate, gifts, arts and crafts, inlaid ornaments, jewelry testing equipment, jewelry accessories and jewelry accessories. Baitai Jewelry produces and manages precious metals such as gold ornaments, gold ornaments, platinum and silver, as well as jewelry and ornaments made of various gems, diamonds, pearls, jadeite and spar and their recycling.