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I'm looking for information regarding your product range, specifically if you have any expandable microspheres that can serve as a substitute for a well-known brand. We're interested in options that match the performance and characteristics of the existing product we're currently using but potentially offer better pricing or availability. Additionally, it would be helpful to know about the specifications, pricing, minimum order quantities, and any other relevant details about your microspheres. If you have technical data sheets or samples available, please let me know as we're keen to evaluate any suitable alternatives that could meet our needs in future projects.