[Precious Metals Themed ETFs Open Higher, SDIC Silver LOF Rises Over 4%] Shenchao TechFlow reports that on August 20, precious metals themed ETFs opened higher, with SDIC Silver LOF rising over 4%. Gold-themed LOF and Harvest Gold LOF both rose over 3%, while Gold LOF was up nearly 3%. Previously, spot gold surpassed the $4,500 mark, reaching this level for the first time since June 4. (Jin10)