Biocatalysis, chemocatalysis, flow chemistry, crystallization, and photochemistry for the development of fine chemicals. Biocatalysis has high selectivity. Chemocatalysis enables efficient, customized synthesis of complex molecules while reducing waste. Flow chemistry allows for control of extreme reaction conditions and hazardous reactants. Due to its superior mass and heat transfer ability, flow chemistry has easy quality control and higher production. This company developed 3D metal-printed flow reactors and mixers using selective laser melting. Highly controlled crystallization is effective for organic compound purification. Photochemistry allows for reactions that are unachievable under mild conditions by using photos; this process leaves no residue.