Dear SirWe are a major orchid grower in Thailand and currently we plan to open up an orchid display showroom. We are planning to source the construction of greenhouse with the below requirement: - the application of this glasshouse is for our flower shop and garden center、 and we may use this glasshouse to organize the garden show from time to time- the space is 30 m length、 and 20 m width、 we prefer to have pad&fan installed on the width side- the prefer gutter height will be at 5 m- external shading (50%) and internal shading (50%) will be required (as seen in your picture)- no heating facilities is requiredFor further enquiry、 please contact me back. Thank you very much.Best Regards、 Chatsorn H.