I am doing aquaculture and biogas business and would like to use your products. We are based in Malaysia, the products can deliver to our warehouse in China Please provide details of product dimensions, packaging size, estimated weight, packing dimensions, specification of products (material specs, frame specs) and etc. Other questions: 1) When there is leakage to the product, how to repair the leakage? 2) when the item delivered to us, can we install by ourselves? Or, it require your technician to install? 3) Valve for the tank and bag included? How many pcs / size? Show More