1.1 Vertical angle between column, glass, and ground should be less than 1°;
1.2 Glass installation should be smooth;
1.3 Column: 100x100x3mm /100x50x3mm steel tube，Frame: 100x50x3.0mm steel tube; cross girder: 100x50x3mm steel tube; all surface adopts electrostatic spraying of zinc base powder and then spraying epoxy powder which makes the surface smooth，
1.5 Net diameter 3.5mm，mesh distance 50x50mm，There are safeguard measures at the end of mesh avoiding scratch, surface adopts electrostatic spraying of zinc base powder and then spraying epoxy powder which makes surface smooth，various indexes comply with GB15065-94 and IE60502, water absorption rate: 0％.
1.6 Standard: GB15065-94,IE60502
1.7 The metal Seine should be kept in a tensioned state to enable the ball to bounce on its surface
1.8 Fasteners are made of 304 stainless steel countersunk head bolts, with special funnel PE gasket, to prevent glass from breaking;
1.9:package: PP film + Wrapping film