LIZHU Pharmaceutical Group, based in the Zhuhai Special Economic Zone, made its B-share debut on the Shenzhen stock exchange yesterday with a 7.1 per cent drop in price and having just one share lot traded. The medicines manufacturer closed at HK$3.90, against an issue price of $4.18 - adjusted to $4.20 when trading began because the minimum trading unit at the exchange is five cents. There were only 2,000 shares - a single share lot - changing hands, a turnover of $7,800. In Hongkong, a dealer with a French brokerage said Lizhu's price drop and quiet trade were not unusual, given the performance of its predecessors and the overall B-share market environment. The Shenzhen B index yesterday was off 4.81 points at 841.63, while total turnover of the Shenzhen exchange stood at $931,000. The B-share listing by Lizhu will be followed by an issue of 13 million A shares. , or 12.5 per cent of the enlarged share capital, according to Lizhu's B-share listing document. Last month the firm issued 28.28 million B shares, or 17.4 per cent of the enlarged share capital, at $4.18 a share, raising $118.2 million.