博茨瓦纳采购需求：中国领先的球阀、蝶阀和锻钢阀，产自新南威尔士州工厂。

We are looking to procure several types of valves. Firstly, we need a number of wafer-type knife gate valves with specific dimensions and materials, designed for reliable operation. Additionally, we require a range of pinch valves, including larger models equipped with hydraulic tanks and manual levers. We also need smaller handwheel-operated pinch valves that meet our pressure specifications. Please provide us with your best quotes and lead times for these items.