公司还经营珠宝系列产品，精致程度各异。
The company also operates jewelry products, refined varying degrees.
中居前列。公司还经营无缝钢管和节能器材。
The company also operating seamless steel tubes and energy-saving equipment.
美国。韩国等国家和地区，同时公司还经营opp。
The United States. Korea and other countries and regions, while the company also operates OPP.
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