# Hybrid Methods for Selecting Precast Concrete Suppliers Based on Factory Capacity
## 2 Literature Review
### Previous Studies on the Relationship Between Factory Supplier Capacity and Its Quality
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**S. No**} & \multirow{2}{*}{**Author(s) and Year**} & \multirow{2}{*}{**Research Intentions**} & \multicolumn{2}{c}{**Unit of**} & \multirow{2}{*}{**Tool of Analysis**} & \multirow{2}{*}{**Approach**} \\  & & & & **Analysis** & & \\ \hline \multirow{4}{*}{**12**} & \multirow{4}{*}{[15]} & to evaluate and select & & COPRAS (Complex & \\  & a desirable & & Proportional Assessment) & Use of expert \\  & sustainable supplier & & & and SWARA (Stepwise & knowledge from a \\  & within the HFS & & Weight Assessment Ratio & team of managers \\  & & context & & Analysis) & \\ \hline
**13** & [21] & construction material & & Firm & Fuzzy AHP & Case study \\ \hline \multirow{4}{*}{**14**} & \multirow{4}{*}{[26]} & financial and & & \multirow{4}{*}{Firm} & Analytical Hierarchy Process & \\  & non-financial losses & & & (AHP) and Technique for & Qualitative opinions & \\  & & non-financial losses & & Order Preference by & based on pairwise \\  & & & Similarity to Ideal Solution & comparisons & \\  & & & & (TOPSIS) & \\ \hline \multirow{4}{*}{**15**} & \multirow{4}{*}{[27]} & building material & & \multirow{4}{*}{Firm} & Intuitionistic Fuzzy Analytic Hierarchy Process (FAHP) & Knowledgeable and \\  & & & & Model & experienced experts \\ \hline \multirow{4}{*}{**16**} & \multirow{4}{*}{[14]} & \multirow{4}{*}{ ceramic tile company} & \multirow{4}{*}{Firm} & Fuzzy Analytic Hierarchical Process (fuzzy AHP) and & \\  & & & & Fuzzy Technique for Order & \\  & & & & Preference by Similarity to & \\  & & & & Ideal Solution (Fuzzy & \\  & & & TOPSIS) & & \\ \hline \multirow{4}{*}{**17**} & \multirow{4}{*}{[28]} & quality attributes & Industry & Weighted Sum Model (WSM) & A survey targeting \\  & & & & & renowned \\  & & & & & contractors in & \\  & & & & Pakistan & \\ \hline \multirow{4}{*}{**18**} & \multirow{4}{*}{[22]} & building and & & Fuzzy Analytical Hierarchy Process (FAHP) and a & & \\  & construction industry & Industry & Preference Ranking & Literature reviews & \\  & suppliers & & Organization Method for & and expert feedback & \\  & & & Enrichment of Evaluations II & & (PROMETHE II) & \\ \hline \multirow{4}{*}{**19**} & \multirow{4}{*}{[29]} & \multirow{4}{*}{intelligent agents} & \multirow{4}{*}{Industry} & Trust-based recommender & \\  & & & system for the peer & & \\  & & & production services (TREPPS) & & \\  & & & model, Technique for Order & & \\  & & & Preference by Similarity to & & Ideal Solution (TOPSIS) & \\ \hline \multirow{4}{*}{**20**} & \multirow{4}{*}{[30]} & to develop a & & Function Analysis System & Reviewing \\  & framework for & & Technique (FAST), SWARA, & & international \\  & selecting appropriate & & WASPAS, and Value & standards, expert & interviews, and the \\  & foundation types & & Engineering (VE) methods & literature & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: _Cont._capacity on the quality. The significance of suppliers' capacity-load balance in ensuring efficiency and meeting required quality specifications was explored by [36].