SMM May 6: Shanghai market southern lead 16495 yuan / ton, for 1905 contract water 60 yuan / ton quotation; red heron lead 16515 yuan / ton, 1906 contract water 100 yuan / ton quotation; Jiangsu and Zhejiang market copper crown 16465 yuan / ton (white), the 1905 contract water 30 yuan / ton quotation. Affected by the uncertainty of the Sino-US economic and trade negotiations, the first day after the festival, the market plummeted, some holders cherished the sale at a low price, and slightly raised their quotations, while the downstream battery market continued the atmosphere of the off-season, a small number of storage enterprises have not yet resumed work, and the lower reaches of the market have to wait and see more carefully. Some of the holders turned to downgrade shipments, and the overall market turnover was average.