We require laser-engraved 3D crystal blocks for architectural applications. Initial order of 100 pieces using our own 3D model, with potential for regular bulk orders upon successful collaboration. Need specifications for 3D model file format requirements. Require confirmation if self-optimization of models according to crystal dimensions is acceptable. Request any available preparation guidelines or templates for model adaptation.

Looking for manufacturer to produce innovative 3D calendars featuring cultural constructions. The calendar pages must be designed to be teared and transformed into 3D figures after use. Special focus on architectural accuracy for educational and display purposes. Custom design capabilities required to represent different cultural landmarks. Please specify minimum order quantities and customization options.

We are seeking a manufacturer to produce 3D puzzles inspired by historical architectural structures. The project requires design services to create models resembling buildings like the Colosseum. Please provide details on:  
1. Total production costs including design fees  
2. Quantity discounts for 500-1000 unit orders  
3. Timeline breakdown for design completion, manufacturing, and shipping to Croatia  
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