求翻译：周大福正式由郑裕彤先生接手经营，当时交易黄金的成色一律为99％（即九九金），九九金同时为香港金行所认同。周大福在产品上的差异化战略是推出99. 99％足金（即4个九足金），在珠宝业界造成轰动效应。4个九足金的成功既为周大福带来丰厚的盈利，更带来良好的信誉是什么意思？

Chow Tai Fook officially took over the business from Mr. Zheng Yutong, when trading of gold fineness of a uniform 99% (ie, Quarterly Supplement), Quarterly Supplement at the same time recognized by the Hong Kong goldsmith. Chow Tai Fook in the product differentiation strategy is the introduction of

The official Week by Cheng Yu-tung, at the time, taking over the operation of the trading gold fineness for 99% (that is, 99 gold, 99 gold for the Hong Kong gold line. Week on the well in the product differentiation strategy is the launch 99 .99 %s gold (that is, 4-9, s gold) in the jewelry industry

Zhou Dafu officially takes over the management by Mr. Zheng Yutong, at that time the transaction gold quality all was 99% (i.e. 99 gold), at the same time the 99 gold approved for Hong Kong Jin Xing.Zhou Dafu promotes 99 on the product variation strategy. 99% pure gold (i.e. 4 nine pure golds), crea

CHOW Tai Fook formally by Mr CHENG took over the business, trading gold fineness of 99% (or 99 gold), 99 gold also accepted gold for Hong Kong. CHOW Tai Fook on product differentiation strategy is the introduction of 99. 99% gold (4 gold), caused a sensation in the jewellery industry effects. 4 nine

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