The present invention provides a color film developing apparatus, which is used to uniformly develop photoresist on the surface of a substrate as manufacturing a liquid crystal panel, comprising a developing chamber. The panels are formed, at least in part, of a mesh-type material that includes openings too small to permit an infant to insert a finger or toe therethrough. The first object and the second object, and the third object and the fourth object of each object element have a negativepositive relationship.